IRScNB_P4087_0138C7P_42_Bulletin 39.pdf
Bulletin of the Royal Belgian Institute of Natural Sciences 1949-1971 / 42 - 1966 Grégoire, C. 1966.
On organic remains in shells of Paleozoic and Mesozoic Cephalopods (Nautiloids and Ammonoids).
irscnb_p4087_0138c7p_42_bulletin-39.pdf — PDF document, 10.64 MB (11157937 bytes)