books for DGCA exams
4 of the Ground studies for pilots series - nav, met, radio aids, flight planning - edition 6
Mechanics of Flight - A.C. Kermode
Air regulations - RK Bali
Indian meteorology books are very hard to find. English book store sells a photocopied set of a book published 80 years ago by the indian met department. Otherwise there is an indian ariforce manual and a jet airways guide on the subject that can be found through word of mouth - i.e. borrowing.
Ordinary bookshops don't carry any of the above. English book store in delhi and Sterling book house in mumbai stock them.