Report of the International Geological Correlation Programme, IGCP.

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Item Link Original Source
Limited (search only)   v.6-9(1978-1981) University of Illinois at Urbana-Champaign
Limited (search only)   v.11-16(1983-1988) University of Illinois at Urbana-Champaign
Limited (search only)   v.17-22(1989-1994) University of Illinois at Urbana-Champaign
Limited (search only)   1989 University of Michigan
Limited (search only)   1991 University of Michigan
Limited (search only)   1993 University of Michigan