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leidy was professor of anatomy at the university of pennsylvania, and later was a professor of natural history at swarthmore college.
وكان ليدي أستاذ التشريح في جامعة ولاية بنسلفانيا، وفي وقت لاحق أستاذ التاريخ الطبيعي في كلية سوارثمور (swarthmore college).
*the joseph leidy on-line exhibit at the academy of natural sciences*the joseph leidy microscopy portal* view works by joseph leidy online at the biodiversity heritage library.
* the joseph leidy on-line exhibit at the academy of natural sciences* the joseph leidy microscopy portal* view works by joseph leidy online at the biodiversity heritage library.