Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.
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William Edward Duellman (1930-) is a renowned herpetologist known for his extensive research on amphibians and reptiles. With a career spanning decades, Duellman has contributed significantly to the understanding of frog taxonomy, ecology, and behavior. His fieldwork supported by the National Science Foundation has led to groundbreaking discoveries in the study of tree frogs. Duellman's expertise and dedication have made him a respected figure in the field of herpetology.
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