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Stebbins, R.C.
2003
A field guide to western reptiles and amphibians. 3rd edition.
Houghton Mifflin Company, Boston & New York. 533 pp.











Stebbins, R.C.
1985
A field guide to western reptiles and amphibians. 2nd rev. ed.
Houghton Mifflin Co., Boston. 336 pp.