S G SUBRAMANIAN, "Constitution of India And Indian Polity | For Civil Service Preliminary and Main Examinations" English | 2019 | pages: 521 | ISBN: 935343453X | PDF | 4,8 mb
Sonali Bansal, Snehil Tripathi, "Modern Indian History for Civil Services Preliminary and Main Examination" English | ISBN: 9353160235 | 2018 | 870 pages | PDF scan | 341 MB
M Laxmikanth, "Indian Polity: For Civil Services and Other State Examinations - 6th edition" English | 2019 | ISBN: 9389538475 | 940 pages | PDF (conv) | 6 MB
Nitin Singhania, "Indian Art and Culture for Civil Services and other Competitive Examinations" English | 2019 | pages: 785 | ISBN: 9353168198 | PDF | 14,5 mb
Science and Technology for Army Homeland Security: Report 1 By Committee on Army Service and Technology for Homeland Defense 2003 | 184 Pages | ISBN: 0309087015 | PDF | 2 MB