Watersheds : a practical handbook for healthy water /
illustrations and original concept by Clive Dobson ; text by Gregor Gilpin Beck.
- Willowdale, Ont. : Firefly Books, 1999.
- 152 p. : ill., maps ; 26 cm.
Includes bibliographical references and index.
1552093301 (pbk.) : $19.95
Ecology. Pollution. Restoration ecology--North America. Water quality. Watersheds--North America. Écologie. Bassins hydrographiques--Amérique du Nord. Eau--Qualité. Pollution. Réhabilitation (Écologie)--Amérique du Nord.