1. Yellow Pages is Handbook of Business Information and Telephone Directory which contains a list of telephone company customers are grouped by alphabetical much as 76 Yellow Pages and White Pages....
Infomedia 1975-1984 year became the first company telephone information service provider in Indonesia under subdivision Elnusa GTDI as a subsidiary of Pertamina. 1984-1995 establishment of PT Elnusa....
Educational institutions of research and community service which is non-tax state revenue