Conservación in-situ de los recursos fitogenéticos : bases científicas y técnicas /

Subjects: “…CONSERVACION DE RECURSOS GENETICOS…”

Documentos.

Subjects:

Mercados para la conservación de la Naturaleza by Gibbs, Wayt W.

Subjects:

La percepción del habitante urbano frente a la conservación de la vida silvestre en Bolivia by Pacheco, Luis F.

Subjects:

Banco regional de datos para la conservación en Latinoamérica y el Caribe. by Mann, Guillermo

Subjects:

Métodos cuantitativos para la toma de decisiones ambientales / by Sanint, Enrique Angel

Subjects:

Métodos cuantitativos para la toma de decisiones ambientales / by Sanint, Enrique Angel

Subjects:

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

Subjects:

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

Subjects:

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

Subjects:

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

Subjects:

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

Subjects:

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

Subjects:

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

Subjects:

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

Subjects:

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

Subjects:

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

Subjects:

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

Subjects:

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

Subjects:

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

Subjects: