00364nam a2200145Ia 4500008004100000041000800041082001600049100000900065245004400074250000600118260005100124300000800175440000600183650002900189210716s1979    xx            000 0 und d  aeng  a004.21 LEEB  aLee.  aIntroducing system analysis and design.  a1  aNew DelhibGalgotia Publications Pvt Ltdc1979  a556  v6  aSystem Analysis & Design