TY  - BOOK
AU  - Lal, Madan 
AU  - Chand, Purshotam
AU  - Chana, M.S.
TI  - Encyclopaedic dictionary of computer science Vol. 4: : (R-Z) 
SN  - 81704101181
U1  - 004.03 
PY  - 1989///
CY  - New Delhi: 
PB  - Anmol Publications
ER  -