TY  - JOUR
A1  - Bidder, G.P.
JO  - Proceedings of the Royal Society
SP  - 61
EP  - 76.
C1  - 64: 61-76.
TI  - The Skeleton and Classification of Calcareous Sponges. 
UR  - https://marinespecies.org/DeepSea/aphia.php?p=sourcedetails&id=7142
VL  - 64
PY  - 1898
Y2  - 2026-04-18
ER  -