TY  - BOOK
AU  - International Atomic Energy Agency
TI  - Nitrogen - 15 in soil - plant studies : proceedings of a research co - ordination meeting on recent development in the use of nitrogen -15 in soil - plant studies organized by the joint FAO/IAEA division of atomic energy in food and agriculture and held in Sofia 1 - 5 December 1969
PY  - 1971///
CY  - Vienna
PB  - International Atomic Energy Agency
ER  -