Published by United States Government Printing Office, Washington, DC, 1969
Seller: Prairie Creek Books LLC., Torrington, WY, U.S.A.
First Edition
Stapled Wraps. Condition: Very Good. No Jacket. Figures, Map (illustrator). 1st Edition. VG/none, used pb, 17pp. Grey colored stiff paper wraps with black colored text on upper; no chips or tears; lightly sunned edges; lightly creased tips. Interior pages clean, unmarked. A description of a conjugate joint system in folded rocks and the determination of relative age of joint sets and other structural features. There is a envelope adhered to the lower wrapper with diagrams enclosed. Original staples present and tight.