共 20 条
[2]
BOATO G, 1954, IN PRESS GEOCHIM COS
[5]
CARBON-13 VARIATIONS IN SEQUOIA RINGS AND THE ATMOSPHERE
[J].
SCIENCE,
1954, 119 (3083)
:141-143
[6]
CRAIG H, 1953, ECON GEOL, V48, P600
[7]
CRAIG HB, 1952, ANAL CHEM, V24, P604
[9]
Variations in the relative abundance of the carbon isotopes
[J].
PHYSICAL REVIEW,
1941, 59 (09)
:771-772