有声读物: National Geographic Magazine Vol. 08 - 06. June 1897

The National Geographic Magazine, an illustrated monthly, the June Number.
It includes the following articles:

• The Effects of Geographic Environment in the Development of Civilization in Primitive Man, by Gardiner G. Hubbard
• The National Forest Reserves, by Frederick H. Newell
• George W. Melville
• Geographic Serials