TY  - GEN
AU  - Hjortsberg, V.
AU  - World Health Organization. Department of Essential Drugs and Medicines Policy. Quality Assurance and Safety Medicines
TI  - WHO Collaborating Centre for Chemical Reference Substances : report on the work in 2001
PY  - 2002///
CY  - Geneva : 
PB  - World Health Organization
KW  - Reference standards
KW  - Pharmaceutical preparations
KW  - Standards
ER  -