Singh, H. N. Geology of the Simla hill : guide to exvcursion no A-1 / by H. N. Singh ; edited by B. C. Roy and A. g. Ihingran - New Delhi : [s.n.] , 1964 - 17 p. ; 21 cm. Subjects--Topical Terms: Geology--Simla hills Dewey Class. No.: 555.4