TY  - BOOK
AU  - WILLIAM L. ALLEN, EDITOR
TI  - NATIONAL GEOGRAPHIC JUNE 1999
SN  - ISSN0027-9358
U1  - 050.8 NG v.06 1999 
PY  - 1999///
CY  - U.S.A.
PB  - NATIONAL GEOGRAPHIC SOCIETY
KW  - PERIODICALS--NATIONAL GEOGRAPHIC
N2  - 上架2017-09-20。
ER  -