TY  - BOOK
AU  - Pivovarov Y.P.
AU  - Al-Sabounchi A.A.
ED  - Russian state medical university .
TI  - Short textbook of Hygiene and ecology: For foreign students 
PY  - 1999///
CY  - W.p.
PB  - W.p.
KW  - Hygiene
KW  - Ecology
KW  - Textbook
ER  -