| Type |  Book |
| ชื่อเรื่อง | Energy, economics and the environment : case studies and teaching activities for elementary school / Office of School Assistance, Center for School Improvement and Performance, Indiana Department of Education |
| ISBN | 9781561836284 |
| พิมพลักษณ์ | Indianapolis, IN : The Department, 1994 |
| รูปเล่ม | 184 p. : ill |
| หัวเรื่อง | Environmental education --Activity programs [] |