000 00322nam a2200133Ia 4500
008 160316s1971 xxu||||| |||| 00| 0 eng d
020 _a
100 _aInternational Atomic Energy Agency
245 _aNitrogen - 15 In Soil Plant Studies
250 _a1st
260 _aVIENNA
_bIAEA
_c1971
300 _a256
700 _a
_a
999 _c15768
_d15768