How to Know the Butterflies: Pictured Key Nature Series

s/ Ilustrated Keys for Determining to Species All Butterflies Found in North America, North of Mexico with Notes on Their Distributions for Collecting and Studying Them

Paul R. Ehrlich lives in California, where he is the Bing Professor of Population Studies and the president of the Center for Conservation Biology at Stanford University. He is the author or coauthor of many books, including, "The Population Bomb, ""The Dominant Animal: Human Evolution and the Environment", and "Humanity on a Tightrope: Thoughts on Empathy, Family, and Big Changes for a Viable Future. "