Summary of miscellaneous potassium-argon age measurements, U.S. Geological Survey, Menlo Park, California, for the years 1972-74
Berry, A.L., Dalrymple, G.B., Lanphere, M.A., and Von Essen, J.C., 1976, Summary of miscellaneous potassium-argon age measurements, U.S. Geological Survey, Menlo Park, California, for the years 1972-74: U.S. Geological Survey Circular 727, 13 p.
Authors
Berry, A.L., Dalrymple, G.B., Lanphere, M.A., and Von Essen, J.C.