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- [2] ISOTOPE STUDIES ON RELEASE OF MINERAL NITROGEN IN FOREST RAW HUMUS - EFFECT OF TEMPERATURE AND INCUBATION TIME ON RELEASE OF NITROGEN AFTER ADDITION OF UREA- AMMONIUM- AND NITRATE-N15 MEDDELELSER FRA DET NORSKE SKOGFORSOKSVESEN, 1967, 23 : 543 - +
- [4] TURNOVER OF N-15-LABELED UREA AND N-15-LABELED AMMONIUM SULFA-NITRATE WITH ADDITION OF DICYANDIAMIDE UNDER ANAEROBIC CONDITIONS IN THE SOIL ZEITSCHRIFT FUR PFLANZENERNAHRUNG UND BODENKUNDE, 1982, 145 (06): : 557 - 560
- [6] INVESTIGATIONS OF THE EFFECT OF PHOSPHORIC PHENYL ESTER DIAMIDE AS INHIBITOR OF THE RUMEN UREASE OF DAIRY-COWS .2. THE METABOLISM OF UREA-N-15 ARCHIV FUR TIERERNAHRUNG-ARCHIVES OF ANIMAL NUTRITION, 1980, 30 (10-1): : 825 - 834