00349nam a2200133Ia 4500008004100000041000800041082001600049100002100065245005200086250000600138260005100144300001100195650000900206210716s1991    xx            000 0 und d  aeng  a005.43 BIRR  aBird, Richard J.  aProfessional programming guide to: unix.bUnix.  a1  aNew DelhibGalgotia Publications Pvt Ltdc1991  avi,151  aUnix