Editore: United States Department of the Interior, Fish and Wildlife Service, 1981
Da: Eryops Books, Stephenville, TX, U.S.A.
Soft cover. Condizione: Near Fine. Softcover; in near fine condition. Book.
Editore: Fish and Wildlife Service, Washington, DC, 1981
Da: Ray Boas, Bookseller - Established 1980, Walpole, NH, U.S.A.
PB. Condizione: good, wraps (softcover). 159pp.
Editore: US Dept. Of Interiror, Fish & Wildlive Service, Washington, DC, 1981
Da: Xochi's Bookstore & Gallery, Truth or consequences, NM, U.S.A.
Paper Back. Condizione: Very Good. No Jacket. 1st. 159pp.; SC white w/blk.; some rub&sun w/'sticker-ghost', bk.cover; clean,tight pgs. Cross-referenced English/Spanish/Scientific. Resource Publication 139.