Grzimek's Animal Life Encyclopedia. Volume 6. Amphibians
Duellman, W.E.; Schlager, N. (Ed.) (2003). Grzimek's Animal Life Encyclopedia. Volume 6. Amphibians. Grzimek's Animal Life Encyclopedia, Second Edition, 6. Thomson Gale: Farmington Hills. ISBN 0-7876-5782-4. xvi, 507 pp.
Part of: Hutchins, M. (Ed.) Grzimek's Animal Life Encyclopedia, Second Edition. Thomson Gale: Farmington Hills. , more
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