TY  - BOOK
AU  - 
AU  - 
TI  - WHO expert committee on biological standardization: fifty first report
SN  - 92-4-120910-0
U1  - 57(083.74) 
PY  - 2002///
CY  - Singapore
PB  - World Health Organisation
KW  - Vaccines- Quality control
KW  - Biologicals- Quality control
KW  - Standardization- Biologicals
KW  - Biological products- standards
ER  -