official Captain Hydro water conservation workbook
Subtitle: teacher's guide
By: by Bob Johnson ; illustrations by Ben Akutagawa.
Contributors: East Bay Municipal Utility District (Calif.)
Edition: National ed. / revisions and new lessons by Marilynne Homitz.
Publisher: East Bay Municipal Utility District
Published: 1975
Place of publication: Oakland, CA
Language: eng
Number of pages: 48
Subjects: Water conservation
Notes: Includes bibliographical references (p. 46-48).