00000cam a22000004a 4500 UP-1685523046125310080 Buklod 20230503092606.0 m |o d | cr ||||||||||| 991231s1989 xx r |||| u|eng|| 0810325993 (iLib)UPMNL-00000044841 AG521 K78 1989 Encyclopedia of information systems and services. Ann Arbor, MI Gale Research c1989 xv, 2868 p. 28 cm. Volume I : United States listings. Data libraries Directories. Electronic publishing Directories. Information services directories. Information storage and retrieval systems Directories. UPMNL CASM AG521 K78 1989 Book