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Lead isotopes in feldspars from selected granitic rocks associated with regional metamorphismBruce R. Doe, Clifford A. Hopson, G. R. Tilton|Journal of Geophysical Research Atmospheres|1965Cited by 52
Age measurements in the Maryland PiedmontG. W. Wetherill, Clifford A. Hopson, G. L. Davis et al.|Journal of Geophysical Research Atmospheres|1966Cited by 32