TY  - BOOK
AU  - Datta,Srilekha
TI  - The ontology of negation
SN  - 8170740932 (pbk) :
U1  - 181.43 
PY  - 1991///
CY  - Calcutta
PB  - K.P. Bagchi
KW  - Abhava
KW  - Nyaya
N1  - Includes bibliographical references and index
ER  -