Which one is better to study physiology from, Debasis Pramanik or ABS Mahapatra for a student of WBUHS?

Debasis Pramanik and ABS Mahapatra both are good books. You can choose any of these two books, which you find easy to understand. However, reading these books will not be enough to cover your concepts. Go through Guyton or Ganong to clear your concepts. But read Guyton or Ganong after you finish reading Debasis Pramanik or ABS Mahapatra, otherwise, you will find it difficult to understand.