Filter
Søkt på: Bøker av W.R. Elliott
Filter
totalt 2 treff
Advances in Soil Science
heftet,
2011,
Engelsk,
ISBN 9781461389842
From the beginning of agriculture until about 1950, increased food production came almost entirely from expanding the cropland base. Since 1950, however, the yield per unit of land …
Second Twentieth
heftet,
2005,
Engelsk,
ISBN 9781845742829