Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 198, pages 1-116
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 198, pages 117-124
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 198, pages 125-138
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 198, pages 139-146
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 199, pages 147-167
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 199, pages 168-178
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 199, pages 179-190
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 199, pages 191-216
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 199, pages 217-225
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 199, pages 226-227
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 199, pages 228-234
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 199, pages 235-245
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 199, pages 246-253
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 199, pages 254-260
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 199, pages 261-265
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 199, pages 266-268
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 199, pages 269-273
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 199, pages 274-285
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 199, pages 301-315
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 199, pages 316-320
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 200, pages 321-332
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 200, pages 374-396
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 200, pages 397-403
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 200, pages 404-443
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 200, pages 444-451
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 200, pages 452-455
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 201, pages 457-496
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 201, pages 497-504
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 201, pages 505-517
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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 202, pages 519-643
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