00269nam a2200097Ia 4500008004100000082001800041100002200059245002900081260004500110300001600155240817s9999    xx            000 0 und d  a001.61 D221,p  aDaniels, Alan ed. 0aPractical systems design  c1985a New delhib Galgotia publications  axii, 258 p.