Singh, P. and Dhar Shukla, S. (1981). Fossils from the lower Tal: their age and its bearing on the stratigraphy of the Lesser Himalaya. Geoscience J. 2(2): 157-176.
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Singh, P. and Dhar Shukla, S.
1981
Fossils from the lower Tal: their age and its bearing on the stratigraphy of the Lesser Himalaya