A Brief Study of Cupules of a Few Megalithic Sites in Jharkhand

My current paper on cupules of a few megalithic sites in the state of Jharkhand which also deals with the largest cupule site of Jharkhand:
https://www.academia.edu/29379806/A_Brief_Study_of_Cupules_of_a_Few_Megalithic_Sites_in_Jharkhand