@article{Foraminifera:SourceID:284430, author = {Willems, W.}, journal = {Bulletin de la Societé belge de la géologie}, pages = {385-435}, title = {Iconography of the Ypresian foraminifera of the Belgian Basin and description of new benthic species}, url = {http://biblio.naturalsciences.be/rbins-publications/bulletin-de-la-societe-belge-de-geologie/097%20-%201988/bsbg_nr97_1988_385-435.pdf}, volume = {97}, year = {1990} }