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BSNL TTA JE BOOK ARE PUBLISED 1. ALL PREVIOUS YEAR SOLVED PAPER (FROM 2006 TO 2015) TOTAL 15 PAPER 2. 10 MODEL SET 3 .FULL STUDY MATERIAL AVATAR COACHING CENTRE & TEST SERIES INFORNT OF SHIVAJI PARK ,D-11(PC COLONY), KANKARBAGH, TEMPU STAND, PATNA-800020 MOBILE NO:-8986933933, 947123132