Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1911, in volume 63, pages 1
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1911, in volume 63, pages 174-199
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1911, in volume 63, pages 234-318
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1911, in volume 63, pages 319-335
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1911, in volume 63, pages 336-373
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1911, in volume 63, pages 374
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1911, in volume 63, pages 438-439
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Published in Proc. Acad. nat. Sci. Philad., in 1911, in volume 63, pages 440-456
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1911, in volume 63, pages 457-468
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1911, in volume 63, pages 487-492
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1911, in volume 63, pages 521-522
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1911, in volume 63, pages 523-524
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1911, in volume 63, pages 548-549
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1911, in volume 63, pages 605
Created: 2013-03-03, modified: 2013-03-03