00348nam a2200133Ia 4500008004100000041000800041082001600049100002100065245005200086250000600138260005000144300001100194650000900205210716s1991    xx            000 0 und d  aeng  a005.43 BIRR  aBird, Richard J.  aProfessional programmers guide to: unix.bUnix.  a1  aNew DelhibGalgotia Publication Pvt Ltdc1991  avi,151  aUnix