A handbook of economic geology /
553 / SEN
Sen, Ajoy Kumar.
A handbook of economic geology / - 2nd / - Calcutta : Modern Book, c1967. c1981. c1993. - 258 p; 22 cm
Rs.16.00
Geology, Economic
Guha, Prasanta Kumar.
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14398 : 553 SEN 6 : Books