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Interpretation of K-Ar and Rb-Sr isotopic dates from a Precambrian basement core, Erie County, Pennsylvania / by Davis M. Lapham
Lapham, Davis M.
Harrisburg : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey, 1975.
vi, 26 pages : illustrations ; 23 cm.
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Information circular - Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey ; 79
Interpretation of K-Ar and Rb-Sr isotopic dates ...
Includes bibliographical references (pages 25-26).
Bound with: Summary of isotopic age determinations in Pennsylvania / by D.M. Lapham and S.I. Root.
QE157.P45 no.70-83 c.1 (Book) bound in
Summary of isotopic age determinations in Pennsylvania / by D.M. Lapham and S.I. Root
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