Annual progress report of the Archaeological Survey of India, Central Circle for ... .
Archaeological Survey of India.Central Circle.
Patna : Supt. Govt. Printing, Bihar and Orisa,
1921-
"Under orders of the Government of India...dated the 31st December 1919, the Eastern Circle of the Archaeological Survey of India was split up into two circles, namely, the Eastern and the Central Circle." -- p. [1]
"In accordance with Government order No. 343-A. & E., dated the 31st December 1919 ... this Circle with headquarters at Calcutta was separated from the old Eastern Circle (now Central Circle) at Patna since April 1920." -- p. [1], Annual report of the Archaeological Survey of India, [New] Eastern Circle, 1920/21.
Archaeological Survey of India. Central Circle
Annual report of the Archaeological Survey of India, Eastern (now Central) Circle