TY  - BOOK
AU  - Trehan, Keshav
TI  - Bharati Bhawan, Patna
SN  - 8122401295
U1  - 620.8 
PY  - 1994///
CY  - New Delhi
PB  - Wiley Eastern Limited
KW  - Engineering and allied operations
KW  - Technology (Applied sciences)
KW  - Biotechnology
ER  -