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- [22] ISOTOPE VARIATIONS C-13/C-12 OF CO2 IN MAN AND OTHER HIGHER ANIMALS COMPTES RENDUS HEBDOMADAIRES DES SEANCES DE L ACADEMIE DES SCIENCES SERIE D, 1971, 273 (02): : 240 - &
- [27] CHANGES IN (CO2)-C-13/(CO2)-C-12 ISOTOPE RATIO IN ATMOSPHERE OF ENCLOSED CHAMBERS DURING PHOTOSYNTHESIS SOVIET PLANT PHYSIOLOGY, 1977, 24 (03): : 529 - 530
- [28] C-12/C-13 ABUNDANCE RATIOS FROM OBSERVATIONS OF INTERSTELLAR H2C-13 O-16 ASTROPHYSICAL JOURNAL, 1974, 189 (02): : 217 - 220
- [29] VARIATION IN ISOTOPIC RATIO C-13/C-12 OF CO2 EXHALED BY RAT AS FUNCTION OF AGE COMPTES RENDUS HEBDOMADAIRES DES SEANCES DE L ACADEMIE DES SCIENCES SERIE D, 1974, 278 (08): : 1119 - 1122