| Type |  Book |
| ชื่อเรื่อง | Environmental education in the United States- past, present, and future / sponsored by the United States Environmental Protection Agency and the National Environmental Education and Training Foundation |
| พิมพลักษณ์ | Burlingame, Calif. : United States Ennvironmental Protection Agency, 1996 |
| รูปเล่ม | iv, 96 p |
| หัวเรื่อง | Environmental education --United States [] |
| | Environmental sciences --United States --Study and teaching [] |