Teletorg: Evaluering av prøvedrift = Premium rate services 
Subtitle: evaluation of a pilotproject (Rapport)
Publisher: Statens institutt for forbruksforskning (SIFO)
Published: 1991
Language: nor
Format: Unknown Binding
ISBN-13: 9788270632718
Subjects: Audiotex services industry; Norway; Pay-per-call telephone services