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Peter A. Christopher
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Journal Article
Published: 01 June 1973
Canadian Journal of Earth Sciences (1973) 10 (6): 846–851.
Journal Article
Journal: GSA Bulletin
Published: 01 September 1969
GSA Bulletin (1969) 80 (9): 1809–1814.
Journal Article
Journal: Economic Geology
Published: 01 November 1966
Economic Geology (1966) 61 (7): 1287–1290.