RAILWAY CA TA Exam Book (Oriya) is published by Kiran Prakashan. It is available in Oriya medium. Best Guide Book cum Reference Book for Railway / RRB Exam Preparation. Consist of Previous Years Solved Question Papers. RAILWAY NON TECHNICAL GRADUATE LEVEL COMMERCIAL APPRENTICE (CA), TRAFFIC APPRENTICE (TA) CBT – 2016 PRACTICE WORK BOOK (ORIYA). It also caters to the exams for the post of: ECRC, Goods Guard, Jr. Accounts Assistant cum Typist, Sr. Clerk cum Typist, Assistant Station Master (ASM) and Traffic Assistant.