00358    a2200109   4500082001600000245010300016260005900119300001900178440001500197650001900212650001700231  a631.41bISO  aIsotope - aided micronutrient studies in rice production with special reference to zinc deficiency  aViennabInternational Atomic Energy Agencyc1975g1975  avi,206p.c29cm  aIAEA - 172  aSoil chemistry  aSoil science