TY  - BOOK
AU  - Khachaturyan,S.
AU  - Badadyan,M.
ED  - Ministry of education and science
ED  - State Engineering University of Armenia
TI  - English in practice: (A manual) 
PY  - 2005///
CY  - Yerevan
PB  - SEUA Print
KW  - English
KW  - Manual
N1  - Technical dictionary included
ER  -