TY  - BOOK
AU  - Anderson,Alan Ross
AU  - Belnap,Nuel D.
TI  - Entailment: the logic of relevance and necessity 
SN  - 0691071926 :
U1  - 164 
PY  - 1975///
CY  - Princeton
PB  - The University Press
KW  - Entailment (Logic)
N1  - Includes bibliographical references and index
ER  -