Nakkady, S. E.; Osman, A. (1954). The genus Globotruncana in Egypt, taxonomy and stratigraphical value. 19th International Geological Congress, C.R., Algiers [1952]. 79-95.
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Nakkady, S. E.; Osman, A.
1954
The genus Globotruncana in Egypt, taxonomy and stratigraphical value.
19th International Geological Congress, C.R., Algiers [1952]