Schwartz, George I. Food chains and ecosystems; : ecology for young experimenters [electronic resource] / [by] George I. Schwartz and Bernice S. Schwartz.. — [1st ed.]. — Garden City, N.Y., : Doubleday,, 1974.. — viii, 109 p. : illus. 24 cm.

Bibliography: p. [98]-100.



Анотація:
Experiments demonstrating ecological relationships, using soil, water, and living plants and animals.

ISBN: 0385033575 038508000X (lib. bdg.)

LCCN: 73015171

Subjects--Topical Terms:
Ecology--Experiments--Juvenile literature.
Ecology--Experiments.

LC Class. No.: QH541.14 / .S38

Dewey Class. No.: 574.5/028