Measures 4-7/32" X 6-31/32", 201+ pp -- written by Dr. Paul D. Ehrlich -- stated "Revised {Ballantine} Edition" and "First {Ballantine} Printing:  February, 1971" -- published by Ballantine Books (NY), Sierra Club / Ballantine paperback #02171.

Group 1-321

Multiple creases across both front & rear covers, plus wear & chipping to edges & corners, with scratches, folds, indentations, rub-wear, soiling, browning pages, etc -- 1/8" gouge front mid-lower edge -- split to spine at front inside cover -- upper spine shows NO lean, but lower spine shows slight lean to right, with NO top to bottom spine crease, but publisher glue bubbles -- penciled price/code at front right inside cover

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