| Type |  Book |
| ชื่อเรื่อง | National parks [electronic resource] : public attitudes, use, and visitor demographics / Matteo Lorenzini, editor |
| ISBN | 1626181322 (electronic bk.) |
| | 9781626181328 (electronic bk.) |
| พิมพลักษณ์ | New York : Nova Publishers, [2013] |
| รูปเล่ม | 1 online resource (viii, 161 pages) |
| หัวเรื่อง | National parks and reserves --Public use --United States [] |
| | National parks and reserves --United States --Public opinion [] |