Plants and the ecosystem /
Billings, W. D.
Plants and the ecosystem / - 2nd ed. - Belmont, Calif. : Wadsworth Pub. Co., 1972. - viii, 177 p. : ill. ;
Second ed. published in 1970 under title: Plants, man, and the ecosystem. Includes index.
333146336
Plant ecology.
MED QK901 / .B5
Plants and the ecosystem / - 2nd ed. - Belmont, Calif. : Wadsworth Pub. Co., 1972. - viii, 177 p. : ill. ;
Second ed. published in 1970 under title: Plants, man, and the ecosystem. Includes index.
333146336
Plant ecology.
MED QK901 / .B5