Bibliography of theses in geology, 1967-1970/
edited by Dederick C. Ward.-
- Colorado: Geological Society of America, 1973.
- vii, in various pagings.-
- (Geological Society of America, special paper; 143). .
"A cooperative project of the American Geological Institute, the Geological Society of America, and the Geo-science Information Continuation of a series of bibliographies started by Byron John Chronic and Halka Chronic in 1958.