New York: Geological Society of America, 1957. First edition thus. Hardcover. Small 4to. Red cloth. Both vols. near fine, and include various fold-out maps and graphs bound in, most of which are labeled in pencil. Sharp and clean throughout. 1937pp. (796pp. in Vol. I, the rest in Vol. II). Near fine. Item #21500
A full year's worth of this geolological journal.