Published by Grand Canyon Natural History Association, Grand Canyon, 1963
Seller: West With The Night, Tucson, AZ, U.S.A.
Wraps. iv, 39, [1] p. illus., maps. Bulletin (Grand Canyon Natural History Association); no. 12. Grand Canyon Natural History Association / Bulletin no. 12. Very good. Light shelfwear, almost like new No ownership marks 1963 ed.