Publicado por Doubleday & Co., Garden City, NY, 1968
Librería: Xochi's Bookstore & Gallery, Truth or consequences, NM, Estados Unidos de America
Paper Back. Condición: Very Good. No Jacket. Thresher, John & Meyer, Judy Ilustrador. unpaginated + 75 cards; SC staple-bound; white w/blk.,red,&blue; some rub; booklet detached from cover w/clean,tight pgs. "This pocket-sized "computer" is really two books in one, with separate punched cards and descriptions for both rocks and minerals." illus.