Trees of Puerto rico Virgin islands מאת Little, Elbert L.

Forestry and ersion in Haiti and Puerto Rico מאת Swabey

Common trees of Puerto Rico and the Virgin Islands מאת Little, Elbert L.

נושאים: "...Trees-Puerto Rico-Identification..."

Trees of the Caribbean National Forest, Puerto Rico מאת Little, Elbert L.

נושאים:

Trees of the caribbean national forest, Puerto Rico מאת Little, Elbert L.

Trees of the caribbean national forest, Puerto Rico מאת Little, Elbert L.

Trees for urban use in Puerto Rico and the Virgin Islands מאת Schubert, Thomas H.

נושאים:

Tree species for plantations in the granite uplands of puerto rico מאת Geary, T.F

The ecological life zones of puerto rico U.S. virgin islands מאת Ewel, J.J

Seed source variation in puerto rico and virgin islands grown mahoganies מאת Barres, H.

Preservative treatment and service life of fence posts in Puerto Rico (1972 Progress Report) מאת Chudnoff, M.

A Tropical rain forest : a study of irradiation and ecology at El Verde, Puerto Rico

Annual letter 2003-2004 : 100 years of tropical forestry in Puerto Rico and the U.S. Virgin Islands

A tropical rain forest : a study of irradiation and ecology at El Verde, Puerto Rico

Report on advanced training in forest ecology in U.S.A., Puerto Rico, U.K., Sweden, Germany, Switzerland and Italy under E.P.T.A. of F.A.O. of the U.N. 1964-65 מאת Kaul, O. N.

Flora of virgin gorda (british virgin islands) מאת Little, Elbert L.

Annual letter 1991-92

Annual letter 1984-85

Annual letter 1988-89