00439nam a2200145Ia 4500008004100000082002300041100001400064245004100078260003000119300001500149490003900164600003200203600003100235650002700266140224s9999    xx            000 0 und d  a631.4:631.582.2 K0  aNye, P.H.  aThe soil under shifting cultivation/  aBucks, EnglandbCABc1960  aviii,156p.  aCAB Technical communication, no.51  a P.H.Nye and D.J.Greenland.  aGreenland, D.J., jt. auth.  aAgronomy,Crop rotation