Environment in the classroom
Subtitle: materials for teachers in Illinois
Contributors: Illinois. Office of the Superintendent of Public Instruction
Publisher: Illinois Institute for Environmental Quality; Conservation and Environmental Education Unit, Office of the Superintendent of Public Instruction
Published: 1972
Place of publication: Chicago, Ill; Springfield, Ill
Language: eng
Subjects: Environmental education
Notes: Cover title.

"September, 1972"--Page [5].