00416nam a2200133Ia 4500008004100000082002900041245004000070260001700110300000900127650001000136942000700146952011200153999001700265140113s9999    xx            000 0 und d  a631.416.1'4:581.001.5 K1  aNitrogen - 15 in soil plant studies  b"IAEA, 1971"  a255p  aSoils  cBK  00104070aKYMbKYMd2014-01-13l0o631.416.1'4:581.001.5 K1pKBK1544r2014-01-13 00:00:00w2014-01-13yBK  c62599d62599