TY  - BOOK
AU  - CHRIS JOHNS, EDITOR IN CHIEF
TI  - NATIONAL GEOGRAPHIC DECEMBER 2008
T2  - VOL. 214 NO.6 2008
U1  - 050.8 NG v.12 2008 
PY  - 2008///
CY  - 
PB  - NATIONAL GEOGRAPHIC SOCIETY
KW  - 连续性出版品; 期刊--NATIONAL GEOGRAPHIC
ER  -