TY  - BOOK
AU  -  World Health Organization 
TI  - Biological  substances: international standards and reference reagents
U1  - QU 
PY  - 1987///
CY  - Geneva
PB  - W H O
KW  - W H O
KW  - Biological Products -Standards
N2  -  Biological Products -Standards, W H O
ER  -