Roger Tory Peterson - Nature - 2002 - 427 pages
A guide featuring the Peterson Identification System collects more than sixty years of observations, paintings, and writings to detail the birds of eastern and central North ...
Keith Rushforth, Charles Hollis - Nature - 2006 - 262 pages
Features more than one thousand annotated illustrations of North American trees and their foliage, seeds, and buds, and provides information on habitat, climate, and species ...
David Sibley - Nature - 2009 - 426 pages
Featuring more than 4,100 detailed paintings and five hundred maps, highlights the similarities and distinctions between approximately six hundred North American tree species.
Donald Culross Peattie - Nature - 1991 - 751 pages
Gives the economic facts regarding the great stands of timber of western North America and identifies over two hundred species of tree