ISBN 7563506799 books & textbook
telecom customer service basic theory and practice
YIN TAO. NING LIAN JU. SHI WEN HUA BIAN ZHU
Beijing University of Posts and Telecommunications /1991-01-01 Paperback
isbn-10: 7563506799 / isbn-13: 9787563506798
YIN TAO. NING LIAN JU. SHI WEN HUA BIAN ZHU
Beijing University of Posts and Telecommunications /1991-01-01 Paperback
isbn-10: 7563506799 / isbn-13: 9787563506798