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  1. 721
    Proceedings of second Pan American scientific congress : irrigation districts in the United States /

    Proceedings of second Pan American scientific congress : irrigation districts in the United States / by Adams, Frank

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    Article
  2. 722
    Proceedings of second Pan American scientific congress : uniformity of distribution of moisture in soils /

    Proceedings of second Pan American scientific congress : uniformity of distribution of moisture in soils / by Fuller, P. E.

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    Article
  3. 723
    Proceedings of second Pan American scientific congress : petroleum and asphalt in the United States /

    Proceedings of second Pan American scientific congress : petroleum and asphalt in the United States / by Shaw, Eugene Wesley

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    Article
  4. 724
    Proceedings of second Pan American scientific congress : outline of the petroleum resources of Ecuador /

    Proceedings of second Pan American scientific congress : outline of the petroleum resources of Ecuador / by Andrade, César D.

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    Article
  5. 725
    Proceedings of second Pan American scientific congress : the petroleum industry of Mexico /

    Proceedings of second Pan American scientific congress : the petroleum industry of Mexico / by Day, David T.

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    Article
  6. 726
    Proceedings of second Pan American scientific congress : irrigation and drainage /

    Proceedings of second Pan American scientific congress : irrigation and drainage / by Newell, F. H.

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    Article
  7. 727
    Proceedings of second Pan American scientific congress : irrigation work of the United States Indian service /

    Proceedings of second Pan American scientific congress : irrigation work of the United States Indian service / by Reed, W. M.

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    Article
  8. 728
    Proceedings of second Pan American scientific congress : relation between wool and mutton production in North and South American sheep industries /

    Proceedings of second Pan American scientific congress : relation between wool and mutton production in North and South American sheep industries / by Marshall, F. R.

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  9. 729
    Proceedings of second Pan American scientific congress : truck marketing on a large scale under cooperative principles /

    Proceedings of second Pan American scientific congress : truck marketing on a large scale under cooperative principles / by Wescott, N. P.

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    Article
  10. 730
    Proceedings of second Pan American scientific congress : the agricultural college and the working farmer /

    Proceedings of second Pan American scientific congress : the agricultural college and the working farmer / by Butterfield, Kenyon L.

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    Article
  11. 731
    Proceedings of second Pan American scientific congress : transportation of perishable commodities, need of cooperation by shippers with carriers /

    Proceedings of second Pan American scientific congress : transportation of perishable commodities, need of cooperation by shippers with carriers / by McPike, Eugene F.

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    Article
  12. 732
    Proceedings of second Pan American scientific congress : the extent and possibilities of cooperation /

    Proceedings of second Pan American scientific congress : the extent and possibilities of cooperation / by Bassett, C. E.

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    Article
  13. 733
    Proceedings of second Pan American scientific congress : uniform grades and standard packages /

    Proceedings of second Pan American scientific congress : uniform grades and standard packages / by More, C. T.

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    Article
  14. 734
    Proceedings of second Pan American scientific congress : standardization of vegetables /

    Proceedings of second Pan American scientific congress : standardization of vegetables / by Cook, S. J.

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    Article
  15. 735
    Proceedings of second Pan American scientific congress : possibilities of intensive agriculture in tropical America /

    Proceedings of second Pan American scientific congress : possibilities of intensive agriculture in tropical America / by Cook, O. F.

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    Article
  16. 736
    Proceedings of second Pan American scientific congress : the role of the dairy industry in a system of national agricultural development /

    Proceedings of second Pan American scientific congress : the role of the dairy industry in a system of national agricultural development / by Rawl, B. H.

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    Article
  17. 737
    Proceedings of second Pan American scientific congress : financing cooperative marketing associations /

    Proceedings of second Pan American scientific congress : financing cooperative marketing associations / by Kerr, W. H.

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    Article
  18. 738
    Proceedings of second Pan American scientific congress : the principles and practices of cooperation applied to citrus production and distribution /

    Proceedings of second Pan American scientific congress : the principles and practices of cooperation applied to citrus production and distribution / by Powell, G. Harold

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    Article
  19. 739
    Proceedings of second Pan American scientific congress : conservación de las plantas industriales /

    Proceedings of second Pan American scientific congress : conservación de las plantas industriales / by Piñol Batres, Rafael

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    Article
  20. 740
    Proceedings of second Pan American scientific congress : el manganeso en la capa arable del Uruguay /

    Proceedings of second Pan American scientific congress : el manganeso en la capa arable del Uruguay / by Maimo Sarrasín, J.

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    Article

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