RRB IT Computer Science Book (English) is published by Kiran Prakashan. It is available in English medium. Best Guide Book cum Reference Book for Railway / RRB Exam Preparation. Consist of Previous Years Solved Question Papers. RRB IT INFORMATION TECHNOLOGY (COMPUTER SCIENCE) SELF STUDY GUIDE-CUM-PRACTICE WORK BOOK (ENGLISH). Useful for recruitment exam to the post of : Junior Engineer & Section Engineer Exam.