IRScNB_P4087_RBINS17630_43_Bulletin 15.pdf
Bulletin of the Royal Belgian Institute of Natural Sciences 1949-1971 / 43 - 1967 Vandercammen, A. 1967.
La question des lamelles apicales dorsales dans les Spiriferida.
irscnb_p4087_rbins17630_43_bulletin-15.pdf
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