Studies the important role of atmospheric ozone in protecting the Earth, and tells how man-made chemicals are causing worrisome holes in the polar ozone layers.
- ISBN10 0516011170
- ISBN13 9780516011172
- Publish Date 1 May 1991
- Publish Status Out of Print
- Out of Print 10 April 2014
- Publish Country US
- Imprint Children's Press(CT)
- Format Hardcover (Library Binding)
- Pages 48
- Language English