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Knowing your trees, by G.H. Collingwood and Warren D. Brush. Rev. and edited by Devereux Butcher. With more than 900 illus. showing typical trees and their leaves, bark, flowers, and fruits

George Harris Collingwood

出版	1965
URL	http://books.google.com.hk/books?id=9b-gzQEACAAJ&hl=&source=gbs_api