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  1. 41
    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.

    Article
  2. 42
    Proceedings of second Pan American scientific congress : opportunities afforded the railroads of the United States for profitable agricultural development work /

    Proceedings of second Pan American scientific congress : opportunities afforded the railroads of the United States for profitable agricultural development work / by Powell, T. F.

    Article
  3. 43
    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.

    Article
  4. 44
    Proceedings of second Pan American scientific congress : the poultry industry; its importance in agricultural development /

    Proceedings of second Pan American scientific congress : the poultry industry; its importance in agricultural development / by Lamon, Harry M.

    Article
  5. 45
    Proceedings of second Pan American scientific congress : what should be done for the settler /

    Proceedings of second Pan American scientific congress : what should be done for the settler / by O'Donnell, I. D.

    Article
  6. 46
    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.

    Article
  7. 47
    Proceedings of second Pan American scientific congress : standardization of vegetables /

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

    Article
  8. 48
    Proceedings of second Pan American scientific congress : contribución a la exploración forestal en la Patagonia austral /

    Proceedings of second Pan American scientific congress : contribución a la exploración forestal en la Patagonia austral / by Hicken, Cristóbal M.

    Article
  9. 49
    Proceedings of second Pan American scientific congress : South American forest resources and their relation to the world's timber supply /

    Proceedings of second Pan American scientific congress : South American forest resources and their relation to the world's timber supply / by Zon, Raphael

    Article
  10. 50
    Proceedings of second Pan American scientific congress : the lesson of forestry in the Philippine Islands /

    Proceedings of second Pan American scientific congress : the lesson of forestry in the Philippine Islands / by Ahern, George P.

    Article
  11. 51
    Proceedings of second Pan American scientific congress : plant introduction opportunities open to all the Americas /

    Proceedings of second Pan American scientific congress : plant introduction opportunities open to all the Americas / by Fairchild, David

    Article
  12. 52
    Proceedings of second Pan American scientific congress : how an animal grows /

    Proceedings of second Pan American scientific congress : how an animal grows / by Waters, H. J.

    Article
  13. 53
    Proceedings of second Pan American scientific congress : securing settlers for private irrigation projects /

    Proceedings of second Pan American scientific congress : securing settlers for private irrigation projects / by Shedd, H. G.

    Article
  14. 54
    Proceedings of second Pan American scientific congress : government control of minerals on public lands /

    Proceedings of second Pan American scientific congress : government control of minerals on public lands / by Callbreath, James F.

    Article
  15. 55
    Proceedings of second Pan American scientific congress : valuation of federal coal lands /

    Proceedings of second Pan American scientific congress : valuation of federal coal lands / by Parsons, Floyd W.

    Article
  16. 56
    Proceedings of second Pan American scientific congress : the valuation of water powers /

    Proceedings of second Pan American scientific congress : the valuation of water powers / by Hagenah, William J.

    Article
  17. 57
    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.

    Article
  18. 58
    Proceedings of second Pan American scientific congress : tropical varieties of maize /

    Proceedings of second Pan American scientific congress : tropical varieties of maize / by Collins, G. N.

    Article
  19. 59
    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.

    Article
  20. 60
    Proceedings of second Pan American scientific congress : cattle raising ant the meat industry in southern Brazil /

    Proceedings of second Pan American scientific congress : cattle raising ant the meat industry in southern Brazil / by Porchat, Reynaldo

    Article

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