Helms, Douglas, and Susan L. Flader, eds. The History of Soil and Water Conservation . Washington DC: Sponsored by the Agricultural History Society; University of California Press, 1985, 244 pp., $@@‐@@15.00

1986 ◽  
Vol 68 (3) ◽  
pp. 757-760
Author(s):  
William Dyer Anderson



Author(s):  
R. Neil Munro ◽  
Teweldeberhan Woldegerima ◽  
Berhane Hailu ◽  
Amanuel Zenebe ◽  
Zemichael Gebremedhin ◽  
...  










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