W. J Kennedy (1986)
The Campanian-Maastrichtian ammonite sequence in the environs of Maastricht (Limburg,the Netherlands),Limburg and Liège provinces (Belgium)
Newsletters on Stratigraphy, vol. 16 (3) p. 25 – 83.
08888, 107, 108, Li, Lg, MEUSE2, CRET, PAL, STRATBIO
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