TY  - BOOK
AU  - BISWAS (S B)
AU  - BISWAS (Amita).
TI  - Introduction to viruses
SN  - 0 7069 0411 7
U1  - 576.64 BISI 
PY  - 1976///
CY  - New Delhi
PB  - Vikas Publishing
ER  -