Mountain state geology.

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Item Link Original Source
Limited (search only)   1977-82 University of Illinois at Urbana-Champaign
Limited (search only)   1977-82 University of California
Limited (search only)   1977-1982, 1984-1986 Purdue University
Limited (search only)   1984-88 University of Minnesota
Limited (search only)   1984-89 University of California
Limited (search only)   1984-1987 University of Michigan
Limited (search only)   1987-1991 Purdue University
Limited (search only)   1988-1991 University of Michigan
Limited (search only)   1989 University of Illinois at Urbana-Champaign
Limited (search only)   1989-91 University of Minnesota
Limited (search only)   1990:Spring-Fall University of Illinois at Urbana-Champaign