1. Auden, J. B.: The structure of the Himalaya in Garhwal. Geol. Survey India, Record71, 407–433 (1937).
2. Bhattacharya, N.: Weathering of glacial tills in Indiana. I. Clay minerals. Geol. Soc. Am. Bull.75, 1007–1020 (1962).
3. Johns, W. D., R. E. Grim andW. F. Bradley: Quantitative estimation of clay minerals by diffraction methods. J. Sediment. Petrol.24, 242–251 (1954).
4. Krishnan, M. S.: Geology of India and Burma. Madras: Higginbothams (Private) Ltd. 1960, 555 p.
5. Medlicott, H. B.: On the geological structure and relation of the southern portion of the Himalayan range between the rivers Ganges and Ravee. Geol. Survey India, Memoir3, 193 p. (1864).