Author: REGNéLL, G.
Title: Revision of the Caradocian-Ashgillian cystoid fauna of Belgium with notes of isolated pelmatozoan stem fragments.
Description: 1951. Inst. Roy. Sci. Nat. Belg. Mém. 120; 47 pp. 6 plts. h.t. Orig. wrps. small libr. stamp on front cover, very good, uncut, lg4to.

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