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Published in Proceedings of the Academy of Natural Sciences, Philadelphia, in 1918, in volume 69, pages 309-333

Created: 2010-11-20, modified: 2021-04-05

Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1918, in volume 70, pages 2-71

Created: 2010-02-12, modified: 2011-10-03

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1918, in volume 70, pages 72

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

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1918, in volume 70, pages 73-74

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

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1918, in volume 70, pages 81-85

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

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1918, in volume 70, pages 114

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

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1918, in volume 70, pages 120-126

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

Published in Proceedings of the Academy of Natural Sciences, Philadelphia, in 1918, in volume 70, pages 144-236

Created: 2011-06-02, modified: 2011-06-21

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1918, in volume 70, pages 239-280

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

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1918, in volume 70, pages 282-333

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

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1918, in volume 70, pages 335-340

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

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1918, in volume 70, pages 356-359

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

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1918, in volume 70, pages 359

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

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1918, in volume 70, pages 360

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