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https://www.riss.kr/link?id=M9728229
Alexandria, VA : Water Environment Federation, [1994]
1994
영어
628.1 판사항(20)
일반단행본
Virginia
Water sourcebook : a series of classroom activities for grades 3-5 / prepared by Tennessee Valley Authority, Environmental Education Section.
1 v. (various pagings) : ill. ; 30 cm.
"January 1994."
"Produced for Legacy, Inc., partners in environmental education, in cooperation with U.S. Environmental Protection Agency."
Introduction to water -- Drinking water and wastewater treatment -- Surface water resources --Groundwater resources -- Wetlands and coastal waters --Glossary -- Factsheets -- Appendix: individuals providing technical review services.
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