[1]
R. Tewari, N. Mehrotra, S. S. K. Pillai, S. K. Pandita, and D. Agnihotri, “Gymnospermous seeds from the Barakar Formation of Umrer Coalfield, Wardha Basin, Maharashtra”, JPS, vol. 61, no. 1-2, pp. 123–130, Dec. 2012.