The External Characters, Skeletal Muscles, and Peripheral Nerves of Kogia Breviceps (Blainville)

Schulte, J. Von W. And M. De Forest Smith

The American Museum Congo Expedition Manatee and Other Recent Manatees.

Hatt, Robert T.

Amphibians of Costa Rica: A Field Guide

Leenders, Twan

Reptiles of Costa Rica: A Field Guide

Leenders, Twan

A Bat Man in the Tropics: Chasing El Duende

Fleming, Theodore H.

The Collected Scientific Papers of the Late William Alexander Forbes

Beddard, F.E.

A Field Guide to the Mammals of Central America and Southeast Mexico [First Edition]1.

Reid, Fiona A.

Handbook of the Mammals of the World, Volume 7: Rodents II

Wilson, Don E.; Thomas E. Lacher, Jr, and Russell A. Mittermeier, editors

Dragonflies and Damselflies: A Natural History

Paulson, Dennis

Sea Otter Symposium.

Bayha, Keith and Jennifer Kormendy, Editors.

1988 International Zoo Yearbook 28

Olney, P.J.S.; Pat Ellis

1987 International Zoo Yearbook Vol. 27

Olney, P.J.S.; Pat Ellis; Bebedicte Sommerfelt