The Science Press, Inc., 1966. Signed. 4To Hardcover. Very Good. Item #74720
A complete two volume set. Signed, dated and inscribed by Ruffin on front endpage. Contents unmarked with b/w photos and diagrams. Binding square and tight, hinges fully attached. Bound in green cloth with lightly bumped corners and gilt lettering. Mild foxing on top of text-block.