Gill, W. D. 1953. The genus Assilina in the Laki series (Lower Eocene) of the Kohat-Potwar Basin, north-west Pakistan. Contr. Cushman Fdn Foramin. Res. 4 (2), 76-83.
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Gill, W. D. 1953. The genus Assilina in the Laki series (Lower Eocene) of the Kohat-Potwar Basin, north-west Pakistan. Contr. Cushman Fdn Foramin. Res. 4 (2), 76-83