TY - JOUR A1 - Lea, I. JO - Proceedings of the Academy of Natural Sciences of Philadelphia C1 - 11: 151-154 [after 31 May 1859] TI - Descriptions of twenty one new species of exotic Unionidae UR - https://www.biodiversitylibrary.org/page/26310565 PY - 1859 Y2 - 2024-03-28 ER -