National Geographic Society: The National geographic magazine ( ) Author author QS:P50,Q167186 Title The National geographic magazine Volume v. 1...
in DJVU-format: File:Popular Science Monthly Volume 9.djvu...
National Geographic Society: The National geographic magazine ( ) Author author QS:P50,Q167186 Title The National geographic magazine Volume v. 3 1891...
National Geographic Society: The National geographic magazine ( ) Author author QS:P50,Q167186 Title The National geographic magazine Volume v. 2 1890...
English Fig. 1. Part of Topographic Map of Pennsylvania, by J. P. Lesley (1871)....
English Fig. 5. determination method: SHA-1...
English UPPER CASTILLO—RIVER SAN JUAN determination method or standard: SHA-1...
The National geographic magazine ( ) Author National Geographic Society (U.S.) Title The National geographic magazine Volume v. 31 Publisher Washington :...
