Instructions for experiments illustrating the characteristics of a freshwater ecosystem, water pollution, and water purification.
- ISBN10 0516005243
- ISBN13 9780516005249
- Publish Date 1 January 1973
- Publish Status Out of Print
- Out of Print 6 August 2014
- Publish Country US
- Imprint Children's Press(CT)
- Format Hardcover
- Pages 48
- Language English