1. 01. English Non Fiction Lessons of the rainforest /   Publication: San Francisco : Sierra Club Books, 1990 . 275 p. ; 24 cm. Date:1990 Availability: Copies available: (1), Actions:
2. 01. English Non Fiction One earth,one future: our changing global environment/ by Silver, Cheryl Simon. Publication: Washington, D.C. : National Academy Press, 1990 . xiii, 196 p. ; 23 cm. Date:1990 Availability: Copies available: (1), Actions: