@article{NARMS:SourceID:132675, author = {Hartman, W.D.}, journal = {Systematic Zoology}, issue = {3}, pages = {97-110}, title = {Re-examination of Bidder's classification of the Calcarea}, url = {https://vliz.be/vmdcdata/narms/narms.php?p=sourcedetails&id=132675}, volume = {7}, year = {1958} }