Emmel, Thomas C. An introduction to ecology and population biology [electronic resource] / [by] Thomas C. Emmel.. — [1st ed.]. — New York, : Norton, [1973]. — x, 196 p. : illus. 22 cm. Bibliography: p. 176-177. ISBN: 0393063933 9780393063936 0393093719 (pbk.) 9780393093711 (pbk.) LCCN: 72014170 Subjects--Topical Terms: Ecology.Population biology.Nature--Effect of human beings on. LC Class. No.: QH541 / .E45 1973 Dewey Class. No.: 574.5/24