00263nam a2200097Ia 4500008004100000082001700041100001700058245003700075260004500112300000800157140113s9999    xx            000 0 und d  a631.4   K5.1  a"Bear, F.E."  aSoils in relation to crop growth  a1965bReinhold Pub.CorporationcNew York  a297