TY  - BOOK
AU  - AAAI
TI  - PROCEEDINGS OF THE NINTH NATIONAL CONFERENCE ON ARTIFICIAL INTELLIGENCE,ANAHEIM,CALIFORNIA,JULY 14-1
SN  - GRATIS
U1  - 881 
PY  - 1991///
CY  - MENLO PARK
PB  - AAAI
N1  - GRATIS
ER  -