World resources. v.4, 1990-91
Swaminathan, M.S., ed.
World resources. v.4, 1990-91 edited by M.S.Swaminathan, Allen L.Hammond - New York Oxford University Press 1990 - xiv, 383 p.; 28cm.
World resources. v.4, 1990-91 edited by M.S.Swaminathan, Allen L.Hammond - New York Oxford University Press 1990 - xiv, 383 p.; 28cm.
