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Bufo
Bibliography of the Cane Toad, Bufo alvarius - Colorado River or Sonoran Desert T, Bufo alvarius - Sonoran Desert Toad, Bufo americanus - American Toad, Bufo boreas - Western Toad, Bufo cognatus - Great Plains Toad, Bufo fowleri - Fowler's Toad, Bufo fowleri - Fowler's Toad, Bufo houstonensis - Houston Toad, Bufo marinus - Cane or Giant Toad
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Atelopus varius - Harlequin Frog
http://elib.cs.berkeley.edu/cgi-bin/amphib_query?where-genus=Atelopus&where-species=varius
Description, distribution, habitat, behavior, conservation and references. AmphibiaWeb.
Biological Control of the Cane Toad (Bufo marinus)
http://www.open.ac.uk/daptf/froglog/FROGLOG-15-4.html
Short article from CSIRO Australian Animal Health Laboratory.
Bufonidae - AmphibiaWeb
http://elib.cs.berkeley.edu/aw/lists/Bufonidae.shtml
An extensive list of the family from Bufo abatus to Bufo xeros. Contains further details for some species.
Bufonidae Family - AMNH
http://research.amnh.org/cgi-bin/herpetology/amphibia?record=IQWBENACJXSZSQHY
Account of the family which includes scientific description references, and a bibliography.
Bufonidae Family - Living Underworld
http://www.livingunderworld.org/anura/database/bufonidae/
Extensive list of over 400 species, with photos for a small handful of entries.
Bufonidae Family - University of Texas
http://www.zo.utexas.edu/research/salientia/bufonidae/bufonidae.html
Description, geographic distribution and phylogenetic relationships of the family.
Bufonidae Family - US Forestery Service
http://www.fs.fed.us/r4/amphibians/family_bufonidae.htm
Details of 5 Bufo species, boreas, cognatus, microscaphus, punctatus and woodhousii.