Dixon J Pearson C J, Norman D W
Sustainable dry land cropping in relation to soil productivity - UN, FAO 1995 - 146
Dryland cropping systems/crop productivity/soil productivity
631. 422 PEA
100
Sustainable dry land cropping in relation to soil productivity - UN, FAO 1995 - 146
Dryland cropping systems/crop productivity/soil productivity
631. 422 PEA
100