Verlag: United States Government Printing Office, Washington, 1961
Zustand: very good. from the abstract, "Attitudes of about 9,000 joints in Precambrian intrusive and meta sedimentary rocks in the 50-square-mile area studied reveal that some joints sets are systematically distributed." softcover, 11.5" x 9", 14 pages, illustrated, name written on cover also viscosity, joints written on side of cover.