اذا لم تجد ما تبحث عنه يمكنك استخدام كلمات أكثر دقة.
48 p. 24 cm
At head of title: Department of the Interior. Franklin K. Lane, secretary
"By Robert Sterling Yard."--p. 3
Two editions of this publication were issued in 1916 by the Department of the Interior. The third and subsequent editions are brought up to date and issued by the National Park Service
Running title: Our national parks
"The national parks at a glance": p. 2