Telecommunication Authority of Singapore.1972/73-1986/87, 1992/1993-1998/1999
Has charts for DEL penetration, business direct exchange line rates and residentail direct exchange line rates with comparisons with other major cites. Also has charts on the number and length of outgoing international direct dialling calls, paging, cellular mobile penetration, telephone, pager & mobile phone densities, and Internet penetration. Postal service rates are also charted with comparisons with other countries.