M. Laxmikanth's Indian Polity is widely considered the "Bible" for UPSC and State PSC aspirants due to its comprehensive coverage and lucid language. The 7th Edition , published by McGraw Hill
6e is that it is available online as an ebook, as a formatted PDF as well as for the Kindle. The 7th edition, only has some 200mb+ M. Laxmikanth Indian Polity Chapter List | PDF - Scribd
The Indian Constitution has undergone several amendments since its adoption in 1950. Some significant reforms include: