Calder, James . Geology of the Indian Sub-Continent: Observations on Mineralogy, Cypsum, Mines and Mountain Formations / Textual Documents James Calder and J.D. Herbert. - 1st ed. / - New Delhi : Cosmo Publications , 1822. - vi,218p. : ill ; 22cm . Subjects--Index Terms: Geology Geology-Indian G-Geology Dewey Class. No.: 550.954 / Ca 125 Ge