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B. Venkatachala, R. Kar, and S. Raza, “Palynology of the Mesozoic sediments of Kutch, W. India - 5. Spores and pollen from Katrol exposures near Bhuj, Kutch district, Gujarat state”, JPS, vol. 17, no. 1-3, pp. 184–207, Dec. 1968.