00329nam a2200121 a 450000500170000002000150001708200160003210000230004824500510007126000410012230000210016370000230018420251203091529.0  a063201833X  a005.13bJOH  aBate, Joseph, JOhn  aFourth-generation languages udner DOS and UNIX  aOxfordbBSP Professional Booksc1987  avi,200p.c23 cm.  aVadhia, Dinesh, B.