This app contains BCS preparation Bangla books, bank job preparation books, BCS computer preparation books, BCS daily science preparation books, bcs English literature books, BCS Bangla grammar books, BCS English preparation book, BCS foreign cadre preparation books,bcs general science preparation books,BCS geography preparation books, BCS math preparation books, BCS police cadre preparation books,bcs MCQ preparation books,bcs Bangladesh affairs books, BCS mp3 books,BCS general knowledge books, BCS ict preparation books, bcs international affairs books, bcs mental ability preparation books, bcs written preparation books,