Kaufman Field Guides
مجموعه کتابها
توسط Kenn Kaufman
جدیدترین:
2011
Birds of North America (Kenn Kaufman Focus Guides) by Kenn Kaufmann
توسط Lynn Hassler Kaufman Rick Bowers and Nora Bowers Kenn Kaufman
Kaufman Field Guide to Birds of North America
توسط Kenn Kaufman, Rick Bowers, Nora Mays Bowers