TY  - BOOK
AU  - Dang,Duc Trach
ED  - National Institute of Hygiene and Epidemiology
TI  - Research works in 1995-1996 =: Travaux de recherches en 1995-1996 
PY  - 1998///
CY  - Hanoi
PB  - Medical Publ. House
KW  - Hygiene
N1  - Includes bibliogr. references
ER  -