scientific article published in 1970

scientific article published in 1970

scientific article published in 1970

scientific article published in 1970

scientific article published in 1970

scientific article published in 1970

scientific article

scientific article published in Science

scholarly article by G. Donald Eberlein published in January 1983

scientific article published in 1965

scientific article published in 1970

scholarly article by David A. Brew et al published 1984 in Open-File Report

scientific article published in 1971

Ph.D. dissertation

scientific article published in 1975

scientific article published in 1975

scientific article published in 1978

scientific article published in 1972

scholarly article by Alexander Thomas Ovenshine et al published 1976 in Journal of Research of the U.S. Geological Survey

scientific article published in 1979