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United States mineral resources
Donald A. Brobst, Walden P. Pratt, editor(s)
1973, Professional Paper 820
The work on this volume began in January 1972, but in a broader sense its production began many years ago. The chapters were written by geologists most of whom have had many years of experience studying the geology of mineral deposits, and more particularly the commodities about which they have...
Geologic map of the Grimaldi quadrangle of the Moon
J.F. McCauley
1973, IMAP 740
The Grimaldi quadrangle lies at the southwest margin of Oceanus Procellarum about 1,000 km east of Orientale, the youngest of the lunar multi-ringed basins. The distal ends of the...