Proceedings of second Pan American scientific congress : the people's interest in water-power resources / by Smith, George Otis

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Proceedings of second Pan American scientific congress : irrigation in the United States / by Fortier, Samuel

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Proceedings of second Pan American scientific congress : engineering work of the United States reclamation service / by Davis, Arthur Powell

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Proceedings of second Pan American scientific congress : the function of live stock in agriculture / by Rommel, George M.

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Proceedings of second Pan American scientific congress : great central markets for live stock and meats / by Hall, Louis D.

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Proceedings of second Pan American scientific congress : the advisability of collegiate courses on marketing and distribution / by Carver, T. N.

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

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

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

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Proceedings of second Pan American scientific congress : the institute of tropical agriculture of the Pacific coast / by Webber, Herbert J.

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Proceedings of second Pan American scientific congress : the development of a market news service / by Sherman, Wells A.

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Proceedings of second Pan American scientific congress : organization by consumers / by Smith, Herbert A.

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Proceedings of second Pan American scientific congress : the Federal Government and the Nation's mineral resources / by Mendenhall, W. C.

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Protección de intereses colectivos en el derecho del mar y cooperación internacional

Subjects: “…Biodiversidad marina Conservación…”

Manejo integrado del recurso agua, con la perspectiva de los principios de Dublín by Solanes, Miguel

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Parks, people and professionals : putting participation into protected area management by Pimbert, Michel P, Pretty, Jules N

Subjects: “…CONSERVACION DE LA NATURALEZA…”

Microbiología de los alimentos / by Frazier, W. C.

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Primera Reunión Iberoamericana de ONGs sobre biodiversidad /

Subjects: “…CONSERVACION DE LA NATURALEZA…”

L' homme contre ou avec la nature? / by Behrman, Daniel

Subjects: “…CONSERVACION DE LA NATURALEZA…”

Destruyan al planeta tierra / by González Fernández, Carlos A.

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