Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1917, in volume 69, pages 1

Created: 2013-03-02, modified: 2013-03-02

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1917, in volume 69, pages 205

Created: 2013-03-02, modified: 2013-03-02

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1917, in volume 69, pages 207-230

Created: 2013-03-02, modified: 2013-03-02

Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1917, in volume 69, pages 231-250

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Published in Proceedings of the Academy of Natural Sciences, Philadelphia, in 1917, in volume 69, pages 251-275

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1917, in volume 69, pages 279

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1917, in volume 69, pages 305-308

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1917, in volume 69, pages 346-353

Created: 2013-03-02, modified: 2013-03-02

Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1917, in volume 69, issue 1, pages 2-6

Created: 2012-05-10, modified: 2012-05-10