Ecology and pollution/water
By: by Martin J. Gutnik. Illustrated by Richard Fickle.
Contributors: Fickle, Richard, illus.
Series: His First experiments in science & nature
Publisher: Childrens Press
Published: 1973
Place of publication: Chicago
Language: eng
Number of pages: 48
Subjects: Water -- Pollution -- Experiments -- Juvenile literature.; Ecology -- Experiments -- Juvenile literature.; Water -- Pollution -- Experiments.; Ecology -- Experiments.
Description: Instructions for experiments illustrating the characteristics of a freshwater ecosystem, water pollution, and water purification.
Notes: Bibliography: p. 47.