[1]
N. Awasthi, J. Guleria, M. Prasad, and R. Srivastava, “Occurrence of acrostichum linn., a coastal fern in the Tertiary sediments of Kasauli, Himachal Pradesh, north-west Himalaya”, JPS, vol. 43, no. 1-3, pp. 83–87, Dec. 1994.