Hammerson, Geoffrey A. books & textbook
Pacific Flyway: Waterbird Migration from the Arctic to Tierra del Fuego
Benedict, Audrey DeLella Hammerson, Geoffrey A. Butler, Robert W.
Sasquatch Books /2020-02-18 Paperback / 176 Pages
isbn-10: 1632171341 / isbn-13: 9781632171344
A Naturalist's Year in the Pacific Northwest
Independently published /2023-10-21 Paperback / 394 Pages
Amphibians and Reptiles in Colorado, Revised Edition
University Press of Colorado /1999-11T Paperback / 484 Pages
isbn-10: 0870815342 / isbn-13: 9780870815348
Connecticut Wildlife: Biodiversity, Natural History, and Conservation
Univ Pr of New England /2004T Paperback / 560 Pages
isbn-10: 1584653698 / isbn-13: 9781584653691
Squaretop Mountain to Stillwater Canyon: Natural and Human History of the Green and Yampa River Country, Wyoming, Colorado, Utah
Independently published /2022-04-23 Paperback / 445 Pages
Amphibians and Reptiles in Colorado: Revised Edition by Geoffrey A. Hammerson (2000-01-02)
University Press of Colorado / Hardcover
