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The population of El Salvador and its natural resources
Vogt, William - 1946
Persistent link: https://www.econbiz.de/10002850498
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Wasserabfluß, Bodenbewegungen und Geschiebetransport in unseren Berglandschaften
Stauber, Hans - 1944
Persistent link: https://www.econbiz.de/10002868741
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Land use and soil conservation in parts of Onitsha and Owerri Provinces : Publ. by authority of the Nigerian Government
Grove, A. T. - 1951
Persistent link: https://www.econbiz.de/10002541090
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Land use and soil conservation on the Jos Plateau : publ. by authority of the Nigerian Government
Grove, A. T. - 1952
Persistent link: https://www.econbiz.de/10002541109
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Afrique, terre qui meurt : la dégradation des sols africains sous l'influence de la colonisation
Harroy, Jean-Paul - 1949 - 2. ed
Persistent link: https://www.econbiz.de/10002634596
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Landwirtschaftsdienst in USA : Bericht von [Heinz] Speiser
Speiser, Heinz - 1951
Persistent link: https://www.econbiz.de/10002338390
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Valles de Colombia
Jaramillo Sierra, Bernardo - 1950 - 2. ed., auspiciada por la Federación nacional de cafeteros
Persistent link: https://www.econbiz.de/10003065349
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The conservation of natural resources
Haw, Richard Claude - 1959
Persistent link: https://www.econbiz.de/10002743765
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Badania nad erozja̜ gleb w Polsce
Reniger, Anna - In: Nowe rolnictwo 7 (1958), pp. 671-673
Persistent link: https://www.econbiz.de/10002689307