00419nam a2200133Ia 4500008004100000082002000041100001900061245003300080260003700113300000800150942000700158952010300165999001700268140113s9999    xx            000 0 und d  a631(02)   N9.66  a"Sparks, D.L."  aAdvances in Agronomy -vol.66  a1999bAcademic PresscCalifornia  a304  cBK  00104070aVTLbVTLd2014-01-13l0o631(02)   N9.66pVBK4700r2014-01-13 00:00:00w2014-01-13yBK  c61284d61284