Philadelphia: Pennsylvania Academy of Science, 1947. Softcover. Good with no dust jacket. Item #230292
Condition is good minus. A cut of some kind to the spine and adjacent front cover, approx. 1/2" long, visible to first 50 pages. Very small tear to outer edge of first 18 pages. Slight vertical crease to front cover and first 20 pages. Spine has chipping to ends and handwritten title. Address ink stamp on front cover. ; 93 pages.