00257nam a2200097Ia 4500008004100000020001800041041000800059100002000067245004500087260002700132211209s2003    xx            000 0 und d  a9788131503256  aeng  aFOROUZAN, BEHRO  aUNIX AND SHELL PROGRAMMING: A TEXT BOOK   bCENGAGE LEARNINGc2003