Research Co-ordination Meeting on Recent Developments in the Use of Nitrogen-15 in Soil-Plant Studies Sofia, Bulgaria, & Joint FAO/IAEA Division of Atomic Energy in Food and Agriculture. (1971). Nitrogen-15 in soil-plant studies: Proceedings. International Atomic Energy Agency.
Lua i Stíl Chicago (17ú heag.)Research Co-ordination Meeting on Recent Developments in the Use of Nitrogen-15 in Soil-Plant Studies Sofia, Bulgaria, agus Joint FAO/IAEA Division of Atomic Energy in Food and Agriculture. Nitrogen-15 in Soil-plant Studies: Proceedings. Vienna: International Atomic Energy Agency, 1971.
Lua MLA (8ú heag.)Research Co-ordination Meeting on Recent Developments in the Use of Nitrogen-15 in Soil-Plant Studies Sofia, Bulgaria, agus Joint FAO/IAEA Division of Atomic Energy in Food and Agriculture. Nitrogen-15 in Soil-plant Studies: Proceedings. International Atomic Energy Agency, 1971.