Singh, P., Nautiyal, D.D. & Vimal, K.P. (1973). Fresh-water diatoms from the Doon Valley, Dehra Dun - I. Journal of the Palaeontological Society of India, 18: 52-60, 1 fig., 1 tbl., 10 pls.
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Singh, P., Nautiyal, D.D. & Vimal, K.P.
1973
Fresh-water diatoms from the Doon Valley, Dehra Dun - I.