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