Alcala, Angel C. Philippine amphibians : an illustrated field guide / Angel C. Alcala and Walter C. Brown - Makati City, Philippines: Bookmark, Inc., c1998. - xii, 116 p.: col. ill.; 16 cm. Includes bibliographical references and indexes. ISBN: 9715693148 Subjects--Topical Terms: 1. Amphibians -- Geographical distribution.2. Amphibians -- Philippines -- Research. Dewey Class. No.: Fil. 597.6 Al346p 1998