00766nam0-22002651i-450-99000167956040332120051005103753.0000167956FED01000167956(Aleph)000167956FED0100016795620030910d1971----km-y0itay50------baengNitrogen - 15 in soil - plant studiesInternational Atomic Energy AgencyViennaInternational Atomic Energy Agency1971255 p.26 cmChimica nucleare541.38ITUNINARICAUNIMARCBK99000167956040332160 541.15 B 242234FAGBCFAGBCNitrogen - 15 in soil - plant studies370963UNINA