Food chains and ecosystems
Subtitle: ecology for young experimenters
By: [by] George I. Schwartz and Bernice S. Schwartz.
Contributors: Schwartz, Bernice S., joint author.
Edition: [1st ed.]
Publisher: Doubleday
Published: 1974
Place of publication: Garden City, N.Y
Language: eng
Number of pages: 109
Subjects: Ecology -- Experiments -- Juvenile literature; Ecology -- Experiments
Description: Experiments demonstrating ecological relationships, using soil, water, and living plants and animals.
Notes: Bibliography: p. [98]-100.