TY  - BOOK
AU  - Cunningham Saigo
TI  - ENVIROMENTAL SCIENCE : A GLOBAL CONCERN 4TH EDITION
U1  - 570 
KW  - 500 áá·áááá¶áá¶ááááááááááá¶áá· áá·áááá·ááá·áááá¶
ER  -