00351nam a2200133Ia 4500008004100000041000800041082001900049100002100068245003000089250000600119260005100125300001200176650002900188210716s1985    xx            000 0 und d  aeng  a004.21028 DANA  aDaniels, Alan;Ya  aPractical systems design.  a1  aNew DelhibGalgotia Publications Pvt Ltdc1985  axii,258  aSystem Analysis & Design