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- [21] NATURAL ABUNDANCE OF N-15 IN VARIOUS BIOGEOCHEMICAL SYSTEMS ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1979, (APR): : 37 - 37
- [22] NATURAL ABUNDANCE N-15 NMR-SPECTROSCOPY OF SILICON NITROGEN AND TIN NITROGEN-COMPOUNDS SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, 1986, 42 (10): : 1113 - 1118
- [23] NITROGEN-FIXATION IN CHICKPEA .2. COMPARISON OF N-15 ENRICHMENT AND N-15 NATURAL-ABUNDANCE METHODS FOR ESTIMATING NITROGEN-FIXATION AUSTRALIAN JOURNAL OF AGRICULTURAL RESEARCH, 1995, 46 (01): : 225 - 236
- [24] ATTEMPT AT ESTIMATING RATE OF SYMBIOTIC FIXATION OF NITROGEN IN LUPINE BY NATURAL ISOTOPIC TRACING (N-15) COMPTES RENDUS HEBDOMADAIRES DES SEANCES DE L ACADEMIE DES SCIENCES SERIE D, 1977, 284 (21): : 2179 - 2182
- [27] DIFFERENCES IN THE NATURAL ABUNDANCE OF N-15 IN THE EXTRACTABLE MINERAL NITROGEN OF CROPPED AND FALLOWED SURFACE SOILS AUSTRALIAN JOURNAL OF AGRICULTURAL RESEARCH, 1987, 38 (01): : 15 - 25