TY  - BOOK
T1  - The logic of questions and answers /
DA  - 1976.
CY  - New Haven :
AU  - Belnap, Nuel D.,
CN  - BC199.Q4
CN  - BC199.Q4
PB  - Yale University Press,
PP  - New Haven :
PY  - 1976.
ID  - 6300
KW  - Question (Logic)
KW  - Question-answering systems.
KW  - Formal languages.
SN  - 0300019629 :
TI  - The logic of questions and answers /
ER  -