Columbia subject headings:
Chakravarti, D. K. (Dhirendra Kishore), 1902-
Geology--India--Congresses.
Mines and mineral resources--India--Congresses.
Harvard subject headings:
Chakravarti, D. K. (Dhirendra Kishore), 1902-
Geology--India--Congresses
Mines and mineral resources--India--Congresses
Princeton subject headings:
Chakravarti, D. K. (Dhirendra Kishore), 1902-
Geology--India--Congresses.
Mines and mineral resources--India--Congresses.