00881nam a22003137i 4500 20180702131038.0 940413s1994 sp gr 000 0 spa c eng ADVISORY COMMITTEE FOR THE CO-ORDINATION OF INFORMATION SYSTEMS DIRECTORY OF UNITED NATIONS DATABASES AND INFORMATION SERVICES, 4TH ED. NUEVA YORK ONU 1990 484 p. Base de datos Biblioteca Problemas sociales Demografía Directorios Educación ONU Salud Servicios sociales Trabajo Documental 10 MON 19940413 Z16.67 10.23 MON