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- A taxonomic reappraisal of the yellow mud turtles, Kinosternon flavescens (Testudines: Kinosternidae). Copeia 1979: 212-225.
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- Biosystematics of the Kinosternon hirtipes species group (Testudines: Kinosternidae). Tulane Stud. Zool. Bot. 23: 1-74.
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- A new Chinese eyed turtle of the genus Sacalia (Batagurinae: Testudines). Proc. Biol. Soc. Washington 105: 426-432.
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- A new species of Cyclemys (Testudines: Bataguridae) from Southeast Asia. Proc. Biol. Soc. Washington 110: 629-639.
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- Variation in East Asian turtles of the genus Mauremys (Bataguridae; Testudines). J. Herpetol. 28(2): 178-187.
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- The proper taxonomic allocations of Emys nigricans Gray, Emys muticus Cantor, and Geoclemys kwangtungensis Pope. Amphibia-Reptilia 10: 23-33.
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- Local and geographic variation in the reproductive biology of the snapping turtle (Chelydra serpentina). Herpetologica 53: 96-117.