Forest environments in tropical life zones : a pilot study / L. R. Holdridge ...[et al.] - Oxford : Pergamon Press ; 1971 - xxxi, 747 p. : ill., (part col.) ; 26 cm. Bibliography: p. 733-736 ISBN: 0080163408 LCCN: 75-129847 Subjects--Topical Terms: Forest ecology--Tropics