Showing 1 - 2 results of 2 for search 'Hartle, Douglas G., 1927-', query time: 0.01s Refine Results
  1. 1
    Book
    by Hartle, Douglas G., 1927-
    Published 1976
  2. 2
    Book
    by Hartle, Douglas G., 1927-
    Published 1978
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