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Amphibia Web. amphibiaweb.org Amphibian Species of the World. research.amnh.org/herpetology/amphibia/index.html Balinsky, B.I. & Balinsky, J.B. 1954. On the breeding habits of the South African bullfrog, Pyxicephalus adspersus. S. Afr. J. Sci. 51: 55-58. Berry, P.Y. 1975. The Amphibian Fauna of Peninsular Malaysia. Tropical Press. Kuala Lumpur, Malaysia. 130 pp. Channing, A., Passmore, N.I. & du Preez, L. 1994. Status, vocalizations and breeding of two species of African bullfrogs. Journal of Zoology 234: 141-148. Cook, C. 1996. Aspects of the breeding biology and ecology of the Giant Bullfrog, Pyxicephalus adspersus. Unpublished MSc thesis, University of Pretoria. Grobler, J.H. 1972. Observations on the amphibian Pyxicephalus adspersus Tschudi in Rhodesia. Arnoldia Rhod. Misc. Publ. 6: 1-4. Heselhaus, R. 1988. Pfeilgiftfrösche. Ulmer, Stuttgart. 99 pp. Inger, R.F. & Stuebing, R.B. 2005. A field guide to the frogs of Borneo. 2. ed. Natural History Publications, Kota Kinabalu, Malaysia. 204 pp. Inger, R.F., Orlov, N. & Darevsky, I.S. 1999. Frogs of Vietnam: a report on new collections. Fieldiana Zoology 92: 1-46. IUCN, Conservation International, & NatureServe. 2004. Global Amphibian Assessment. www.globalamphibians.org Kok, D., du Preez, L.H. & Channing, A. 1989. Channel construction by the African bullfrog: another anuran parental are strategy. Journal of Herpetology 23: 435-437. Kunz, K. 2003. Krallenfrösche, Zwergkrallenfrösche, Wabenkröten. Pipidae in Natur und Menschenhand. Natur und Tier Verlag, Münster. 118 pp. Loveridge, J.P. 1979. Cocoon formation in two species of southern African frogs. S. Afr. J. Sci. 75: 18-20. Mattison, C. 1987. Frogs and toads of the world. Blandford, Poole, 191 pp. Minter, L.R., Burger, M., Harrison, J.A., Braack, H.H., Bishop, P.J. & Knoepfer, D. 2004. Atlas and Red Data Book of the Frogs of South Africa, Lesotho and Swaziland. SI/MAB Series No. 9. Washington, D.C. Orlov, N.L. 1997. Die Theloderma-Arten Vietnams. Herpetofauna (Weinstadt) 19(110): 5-9. Parry, C.R. & Cavill, R. 1978. A note on cocoon formation and structure in Pyxicephalus adspersus Tschudi (Anura: Ranidae). Trans. Rhod. Sci. Assoc. 58(9): 55-58. Parry, C.R. 1982. A revision of southern African Pyxicephalus Tschudi (Anura: Ranidae). Annals of the Natal Museum 25: 281-292. Passmore, N.I. & Carruthers, V. 1995. South African frogs: a complete guide. (Rev. edition). Southern Book Publishers & Witwatersrand University Press, Halfway House & Johannesburg. 322 pp. Passmore, N.I. & Carruthers, V.C. 1995. South African Frogs, 2nd Edition. Southern Book Publishers and Witwatersrand University Press. Johannesburg. Paukstis, G.L. & Reinbold, S.L. 1984. Observations of snake-feeding by captive African bullfrogs (Pyxicephalus adspersus). British Herpetological Society Bulletin 10: 52-53. Poynton, J.C. & Broadley, D.G. 1985. Amphibia Zambesiaca. 2. Ranidae. Annals of the Natal Museum 27: 115-181. Schiøtz, A. 1999. Treefrogs of Africa. Edition Chimaira, Frankfurt am Main. 350 pp. Schmidt, A.A. 1994. Erst-Nachzucht der Asiatischen Baumkröte Pedostibes hosii. Salamandra 30(4): 225-233. Van Wyk, J.C.P., Kok, D.J. & du Preez, L.H. 1991. Growth and behaviour of Pyxicephalus adspersus tadpoles. Abstracts Herpetol. Assoc. Afr. Symp. 2: 17-18. Wager, V.A. 1986. Frogs of South Africa, 2nd edition. Delta Books. Craighall. Walls, J.G. 1994. Jewels of the rainforest - poison frogs of the family Dendrobatidae. T.F.H. Publications, Neptune City. 288 pp. |