Ecosystems and Human Affairs.
Purdom, P. W.
Ecosystems and Human Affairs. - Ohio : Charles E. Merrill Publishing Company, 1980. - 402p. Table, illus. 24cm.
Ecosystems and Human Affairs
QH 541.5 / P87 1980
Ecosystems and Human Affairs. - Ohio : Charles E. Merrill Publishing Company, 1980. - 402p. Table, illus. 24cm.
Ecosystems and Human Affairs
QH 541.5 / P87 1980