'Common Trees of Puerto Rico and the Virgin Islands; Agriculture Handbook No. 249' by Elbert L. Little Jr. (Dendrologist, Division of Timber Management Research Forest Service, Wahsington) & Frank H. Wadsworth (Director, Institute of Tropical Forestry Forest Service, Rio Piedras, Puerto Rico). Published for the U.S. Department of Agriculture Forest Service in 1964 by US Government Printing Office, Washington D.C. Hardcover, some discolouration and small damage to spine, but otherwise in good condition.

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