Proceedings of second Pan American scientific congress : a forest policy for a nation / by Graves, Henry S.

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Proceedings of second Pan American scientific congress : relation of the government to the marketing problem / by Galloway, Beverly T.

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Proceedings of second Pan American scientific congress : relation between quantity of irrigation water used and quantity of crop produced / by Widtsoe, John A.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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