00290nam a2200097Ia 4500008004100000082001700041100002400058245006000082260004200142300000800184140113s9999    xx            000 0 und d  a631.811   L2  a"Emanuel, Epstein."  aMineral Nutritin of Plants :Principles and Perspectives  a1972bWiley Eastern Book shopcU.S.A.  a412