Author: Kongiel, R.
Title: O przedstawicielach rodzaju Echinocorys z Danu. Danii, Szwecji i Polski.
Description: Warszawa, Panstwego Instytutu Geologicznego, 1949. 4to. 59 pp., 61 text figures, two folding tables, one folded chart, 18 plates. Original printed wrappers. = Important contribution to the Danian sea urchins of Denmark, Sweden, and Poland by the Polish palaeontologist Roman Kongiel (1904-1960). With several new species. Well-illustrated. Spine cover chipped, internally a very good clean copy. Rare.

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