00450nam a2200121Ia 450000500170000000800410001702000220005805000190008010000190009924501260011826000380024465000460028220251229172446.0251229s9999    xx            000 0 und d  a978-0-8213-5784-2  aTK 5105.5 .R81  aDymond, Andrew 0aTelecommunications challenges in developing Countriesb asymmetric interconnection charges for rural areascAndrew Dymond  aWashingtonb The World Bankc2004  aTelecommunication - Developing Countries.