Published in Journal of The Washington Academy of Sciences, in 1947, in volume 37, pages 1-2
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Published in Journal of The Washington Academy of Sciences, in 1947, in volume 37, pages 2-18
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Published in Jour Washington Acad Sci, in 1947, in volume 37, pages 19-22
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Published in Journal of The Washington Academy of Sciences, in 1947, in volume 37, pages 22-24
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Published in Journal of The Washington Academy of Sciences, in 1947, in volume 37, pages 64-72
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Published in Jour Washington Acad Sci, in 1947, in volume 37, pages 89-91
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Published in Journal of The Washington Academy of Sciences, in 1947, in volume 37, pages 92-95
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Published in Journal of The Washington Academy of Sciences, in 1947, in volume 37, pages 95-102
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Published in Jour Washington Acad Sci, in 1947, in volume 37, pages 104-105
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Published in Journal of The Washington Academy of Sciences, in 1947, in volume 37, pages 109-111
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Published in Journal of The Washington Academy of Sciences, in 1947, in volume 37, pages 111-13
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Published in Journal of The Washington Academy of Sciences, in 1947, in volume 37, pages 113-134
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Published in Journal of The Washington Academy of Sciences, in 1947, in volume 37, pages 134-139
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Published in Jour Washington Acad Sci, in 1947, in volume 37, pages 160-169
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Published in Jour Washington Acad Sci, in 1947, in volume 37, pages 170-178
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Published in Journal. Washington Academy of Sciences, Washington, D. C, in 1947, in volume 37, pages 210-7
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Published in Journal of The Washington Academy of Sciences, in 1947, in volume 37, pages 242-243
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Published in Jour Washington Acad Sci, in 1947, in volume 37, pages 263-275
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Published in Jour Washington A Cad Sci, in 1947, in volume 37, pages 275-284
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Published in Journal of The Washington Academy of Sciences, in 1947, in volume 37, pages 284-288
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Published in Jour Washington Acad Sci, in 1947, in volume 37, pages 293-296
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Published in Jour Washington Acad Sci, in 1947, in volume 37, pages 306-309
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Published in Jour Washington Acad Sci, in 1947, in volume 37, pages 310-315
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Published in Journal of The Washington Academy of Sciences, in 1947, in volume 37, pages 315-325
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Published in Journal of The Washington Academy of Sciences, in 1947, in volume 37, pages 325-328
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Published in Jour Washington Acad Sci, in 1947, in volume 37, pages 354-366
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Published in Journal of The Washington Academy of Sciences, in 1947, in volume 37, pages 366-368
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Published in Jour Washington Acad Sci, in 1947, in volume 37, pages 397-407
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Published in Jour Washington Acad Sci, in 1947, in volume 37, pages 427-430
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Published in Journal of The Washington Academy of Sciences, in 1947, in volume 37, pages 430-435
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Published in Jour Washington Acad Sci, in 1947, in volume 37, issue 4, pages 140-141
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Published in Journal of the Washington Academy of Sciences, in 1947, in volume 37, issue 7, pages 243-254
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Published in Journal of The Washington Academy of Sciences, in 1947, in volume 37, issue 10, pages 353-354
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