The changing world of living things
By: by Frances L. Behnke.
Edition: [1st ed.]
Series: A Changing world book
Publisher: Holt, Rinehart and Winston
Published: 1972
Place of publication: New York
Language: eng
Number of pages: 169
Subjects: Ecology -- Juvenile literature.; Ecology.
Description: Discusses the importance of ecological balance for people, animals, and plants and the ways in which this balance is threatened.
Notes: Bibliography: p. 160-162.