Telephone numbers in Singapore digits. Five digits were introduced in 1960s, whereas 5-digit and 6-digit phone numbers were introduced in 1960s as fixed lines grew, but in that year, these changed to seven digits as the introduction of new towns arose (Tampines, Jurong East, Bukit Batok, Yishun and Hougang) and a large number of new numbers were required. Rationalisation was based on geographical locale over the 12 years. In 1995, the digit '9' was added to the front of mobiland pager numbers, making numbers eight digits, and on 1 March 2002, the digit '6' was added to the front of existing fixed line telephone
Latvian ISBN Agency is in the leading position with 300 titles. Other notable publishers are Jumava, Avots and Kontinents. Fiction dominates with 613 titles; textbooks 411 titles; science, research and popular scientific books 303 titles; children books and comics 233 publications; popular issues 113 titles. The other types of publications do not reach 100 titles a year. There are 27 music publishers in Latvia. Latvian ISBN Agency Latvian ISBN/ISMN agency () - is an agency responsible for assigning ISBN numbers for the group identifier 9984 to books and ISMN numbers to printed music in Latvia. As of 2008 the agency is part of