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April 15
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1919, in volume 71, pages 121
Report of the Curators
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1919, in volume 71, pages 306-312
Elections in 1919
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1919, in volume 71, pages 317-323