Acceptable. 1969 Hardcover Revised illus., maps, plans. xxxii, 271,  p. "Illustrations": p. - (3d group); Bibliographical references included in "Notes" (p. 227-251) Shows definite wear, and perhaps considerable marking on inside. Shipped to over one million happy customers. Your purchase benefits world literacy!
Fair. 1969; Revised edition; soft cover; covers toned and soiled with medium edge wear; creases on spine; large crease on rear cover; tight binding; unmarked interior; 8vo-over 7 3/4"-9 3/4" Tall; 271 plus approximately 150 pages of illustrations.
Fair. Used-Acceptable. Missing Dj, shows wear. Good reading copy. Open Books is a nonprofit literacy organization and all proceeds benefit literacy. Open Books is a nonprofit social venture that provides literacy experiences for thousands of readers each year through inspiring programs and creative capitalization of books.
Very Good. No Dustjacket. Pages crisp and clean except for a prior owner's name at the front free endpaper and light age-toning in the margins; binding square and secure; full brown cloth cover shows small inward turns at two free corners and a bit of softening at the spine heel, modest rubbing to the red ink decoration around the title at the spine, and modest shelf rubbing at corners and spine ends, otherwise excellent. 271pp. + ~100pp. black-and-white photo illustrations (456 figures in all).
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