LITTLE, Elbert L. WADSWORTH, Frank H. Common trees of Puerto Rico and the Virgin Islands - Whashington U.S. DEPARTMENT OF AGRICULTURE 1964 - 548 p. - Agriculture Handbook Nš 249- Forest Service . Subjects--Topical Terms: ARBOLES COMUNESESPECIESPUERTO RICOISLAS VIRGENES Universal Decimal Class. No.: 630*810 LIT