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Boden- u. Wassererhaltung in den USA : Reise- u. Literaturbericht über Projekt-TA 31-122 d. Mutual Security Agency (MSA)
Schleifer, Helmut - 1955
Persistent link: https://www.econbiz.de/10000525788
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Bank credit for soil conservation
Francis, Darryl R. - 1945 - 2. pr
Persistent link: https://www.econbiz.de/10002199565
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Reclamation under the Desert Land Act, 1954-59
Landstrom, Karl S. - In: Journal of farm economics 42 (1960), pp. 629-638
Persistent link: https://www.econbiz.de/10002161509
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Die Lösung der grossen Präriebefruchtungen und andere Wirtschaftsprobleme in den Vereinigten Staaten Amerikas
Fischer, Emil S. - In: Mitteilungen der Geographischen Gesellschaft Wien 50 (1907), pp. 472-489
Persistent link: https://www.econbiz.de/10002166555
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Watershed resources and problems of the Upper Rio Grande Basin
Dortignac, E. J. - 1956
Persistent link: https://www.econbiz.de/10002086144
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Survey of mountainous areas : [Mit zahlr. Kt.]
1955
Persistent link: https://www.econbiz.de/10002268362
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Produktieverhoging in de landbouw door watertoediening : rapport Studiegroep Landbouw
1955
Persistent link: https://www.econbiz.de/10003211910
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50 years of reclamation : financial report to the Nations stockholders, 1902-1952
1952
Persistent link: https://www.econbiz.de/10003139939
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Working water for California's Central Valley
1949
Persistent link: https://www.econbiz.de/10003274467