TY  - GEN
T1  - The United States
PP  - Washington, DC
PB  - National Geographic Society
YR  - 2006
UL  - http://www.ds.mainlib.upd.edu.ph/Record/UP-1685523046125428928
NO  - "Supplement to the October 2006 National Geographic magazine."
NO  - Title on verso : The United States : history of the land.
CN  - G 3701 S12 2006 N38
KW  - United States : Maps.
KW  - United States : History : Maps.
ER  -