J. B Richardson (1974)
The stratigraphic utilization of some Silurian and Devonian miospore species in the north:. In: BOUCKAERT,J. & STREEL,M. (Editors),Guidebook of the International Symposium on Belgian micropaleontological limits from Emsian to Visean,Namur. Sept. 1974
Service géologique de Belgique / Belgische Geologische Dienst, vol. publication - 09 Namur1974 p. 13 p.
12255, SIL, 1, DEV, PALYNO
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