Bishop, J. D. D.; Hayward, P. J. (1989). SEM Atlas of type and figured material from Robert Lagaaij's 'The Pliocene bryozoa of the Low Countries. Meded. (Rijks Geol. Dienst). 43: 1-64.
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Bishop, J. D. D.; Hayward, P. J.
1989
SEM Atlas of type and figured material from Robert Lagaaij's 'The Pliocene bryozoa of the Low Countries
