TY  - BOOK
AU  - ????? , ?: ???: ?????
TI  - System Analysis Design Methods
SN  - لا
U1  - ???????? ?????? 
PY  - 1982///
CY  - 
PB  - 
KW  - ?????, ??????????, ???????
N1  - ?????-????????? ?????? ???????
N2  - 321.8095492/M278b
ER  -