Published in Journal of The Washington Academy of Sciences, in 1946, in volume 35, pages 180-182

Published in Journal of The Washington Academy of Sciences, in 1946, in volume 35, pages 330-336

Published in Jour Washington Acad Sci, in 1946, in volume 36, pages 16-21

Published in Journal of The Washington Academy of Sciences, in 1946, in volume 36, pages 27-29

Published in Jour Washington Acad Sci, in 1946, in volume 36, pages 37-40

Published in Journal of The Washington Academy of Sciences, in 1946, in volume 36, pages 46-52

Published in Journal of The Washington Academy of Sciences, in 1946, in volume 36, pages 52-57

Published in Journal of The Washington Academy of Sciences, in 1946, in volume 36, pages 57-60

Published in Jour Washington Acad Sci, in 1946, in volume 36, pages 75-76

Published in Jour Washington Acad Sci, in 1946, in volume 36, pages 76-86

Published in Journal of The Washington Academy of Sciences, in 1946, in volume 36, pages 86-94

Published in Journal of The Washington Academy of Sciences, in 1946, in volume 36, pages 97-99

Published in Journal of The Washington Academy of Sciences, in 1946, in volume 36, pages 127-131

Published in Journal of The Washington Academy of Sciences, in 1946, in volume 36, pages 195-205

Published in Jour Washington Acad Sci, in 1946, in volume 36, pages 206-212

Published in Journal of The Washington Academy of Sciences, in 1946, in volume 36, pages 219-225

Published in Jour Washington Acad Sci, in 1946, in volume 36, pages 245-248

Published in Journal of The Washington Academy of Sciences, in 1946, in volume 36, pages 249-258

Published in Jour Washington Acad Sci, in 1946, in volume 36, pages 267-269

Published in Jour Washington A Cad Sci, in 1946, in volume 36, pages 270-280

Published in Journal of The Washington Academy of Sciences, in 1946, in volume 36, pages 305-313

Published in Jour Washington Acad Sci, in 1946, in volume 36, pages 314-317

Published in Journal of The Washington Academy of Sciences, in 1946, in volume 36, pages 317-320

Published in Jour Washington Acad Sci, in 1946, in volume 36, pages 355-360

Published in Jour Washington Acad Sci, in 1946, in volume 36, pages 372-384

Published in Jour Washington Acad Sci, in 1946, in volume 36, pages 385-387

Published in Journal of The Washington Academy of Sciences, in 1946, in volume 36, pages 388-389

Published in Jour Washington Acad Sci, in 1946, in volume 36, pages 390-391

Published in Journal of The Washington Academy of Sciences, in 1946, in volume 36, pages 392-393

Published in Journal of The Washington Academy of Sciences, in 1946, in volume 36, pages 409-415

Published in Jour Washington Acad Sci, in 1946, in volume 36, pages 416-421

Published in Journal of The Washington Academy of Sciences, in 1946, in volume 36, pages 421-425

Published in Jour Washington A Cad Sci, in 1946, in volume 36, pages 425-427