Books by John Douglass

Peterson First Guide To Shells Of North America

by Roger Tory Peterson, John Douglass

Peterson First Guides are the first books the beginning naturalist needs. Condensed versions of the famous Peterson Field Guides, the First Guides focus on the animals, plants, and other natural things you are most likely to see. They make it fun to get into the field and easy to progress to the full-fledged Peterson Guides.