@article{MolluscaBase:SourceID:41015,
author = {Dall, W. H.},
journal = {Proceedings of the Academy of Natural Sciences, Philadelphia },
pages = {303-306},
title = {Notes on Drupa and Morula. },
url = {https://www.jstor.org/stable/pdf/4063885.pdf},
volume = {75},
year = {1923}
}