Comprehensive booklist covering various subjects required for UPSC Civil Services preparation:

1. Indian Polity:
   • “Indian Polity” by M. Laxmikanth
   • “Introduction to the Constitution of India” by D. D. Basu
2. Indian Economy:
   • “Indian Economy” by Ramesh Singh
   • “Economic Survey” (Latest edition)
   • “India Year Book” (Latest edition)
3. History:
   • “India’s Struggle for Independence” by Bipan Chandra
   • “A Brief History of Modern India” by Spectrum Publications
   • “Ancient India” by R.S. Sharma
   • “Medieval India” by Satish Chandra
4. Geography:
   • “Certificate Physical and Human Geography” by Goh Cheng Leong
   • “Oxford School Atlas” by Oxford University Press
   • NCERT textbooks for Geography (Class 6 to 12)
5. Environment and Ecology:
   • “Environment and Ecology” by Majid Husain
   • “Environmental Studies: From Crisis to Cure” by R. Rajagopalan
   • “Shankar IAS Environment Book”
6. Science and Technology:
   • “Science and Technology in India” by Kalpana Rajaram
   • NCERT textbooks for Science (Class 6 to 10)
   • “Current Affairs” related to science and technology
7. Current Affairs:
   • “The Hindu” or “The Indian Express” newspaper
   • “Yojana” and “Kurukshetra” magazines
8. Essay Writing:
   • “151 Essays for UPSC Mains” by Disha Experts
   • “Essay Writing for Civil Services” by Pulkit Khare
9. Ethics, Integrity, and Aptitude:
   • “Lexicon for Ethics, Integrity, and Aptitude” by Chronicle Publications
   • “Ethics, Integrity, and Aptitude” by Subba Rao and P.N. Roy Chowdhury
10. Optional Subject:
    • Choose standard textbooks based on your optional subject. For example, if your optional subject is History, refer to books by Bipan Chandra, Romila Thapar, and Satish Chandra.
11. General Studies Manuals: [Not Prefered]
    • “General Studies Paper 1 Manual” by Tata McGraw Hill
    • “General Studies Paper 2 Manual” by Tata McGraw Hill
12. Other Useful Books:
    • “India After Gandhi” by Ramachandra Guha

Always cross-check with the latest syllabus and recommendations by successful candidates or coaching institutes. Also, remember to supplement your reading with regular newspaper reading, online resources, and test series for comprehensive preparation.