Bulletin /
State of Delaware, Delaware Geological Survey.

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Item Link Original Source
Limited (search only)   no.1-5 University of California
Limited (search only)   no.1-5(1953-1955) University of Illinois at Urbana-Champaign
Full view   no.1-6 1953-1957 University of Michigan
Limited (search only)   no.6 University of California
Limited (search only)   no.7 University of California
Full view   no.7-12 1957-1964 University of Michigan
Limited (search only)   no.8 University of California
Full view   no.8-12 (1960-64) University of Minnesota
Full view   no.9-11(1962-1964) University of Illinois at Urbana-Champaign
Limited (search only)   no.9-12 University of California
Full view   no.13 1970 Cornell University
Limited (search only)   no.13-16 1970-1982 University of Michigan
Limited (search only)   no.13 Pennsylvania State University
Limited (search only)   no.14 Pennsylvania State University
Full view   no.14 1973 Cornell University
Limited (search only)   no.15-16 Pennsylvania State University
Full view   no.15 1977 Cornell University
Limited (search only)   no.16-17 University of Minnesota
Limited (search only)   no.16 1982 Cornell University
Limited (search only)   no.17 Pennsylvania State University
Limited (search only)   no.17-19 1985-1995 University of Michigan
Limited (search only)   no.18 Pennsylvania State University
Limited (search only)   no.20 1996 University of Michigan