Published in Journal of the Washington Academy Of Sciences, in 1957, in volume 47, issue 6, pages 196-202

Published in Journal of The Washington Academy of Sciences, in 1957, in volume 47, pages 39-40

Published in Journal of The Washington Academy of Sciences, in 1957, in volume 47, pages 415-423

Published in Journal of The Washington Academy of Sciences, in 1957, in volume 47, pages 370-374

Published in Journal of The Washington Academy of Sciences, in 1957, in volume 47, pages 112-116

Published in Journal of The Washington Academy of Sciences, in 1957, in volume 47, pages 330-339

Published in Journal of The Washington Academy of Sciences, in 1957, in volume 47, pages 375-377

Published in Journal of The Washington Academy of Sciences, in 1957, in volume 47, pages 379-390

Published in Journal of The Washington Academy of Sciences, in 1957, in volume 47, pages 275-277

Published in Journal of The Washington Academy of Sciences, in 1957, in volume 47, pages 157-158

Published in Journal of The Washington Academy of Sciences, in 1957, in volume 47, pages 316-319

Published in Journal of The Washington Academy of Sciences, in 1957, in volume 47, pages 153-156

Published in Journal of The Washington Academy of Sciences, in 1957, in volume 47, pages 423

Published in Journal of The Washington Academy of Sciences, in 1957, in volume 47, pages 159-167

Published in Journal of The Washington Academy of Sciences, in 1957, in volume 47, pages 354-356

Published in Journal of The Washington Academy of Sciences, in 1957, in volume 47, issue 12, pages 407-410

Published in Journal of The Washington Academy of Sciences, in 1957, in volume 47, issue 1, pages 6-9

Published in Journal of the Washington Academy of Sciences, in 1957, in volume 47, issue 2, pages 42-59

Published in Jour Washington Acad Sci, in 1957, in volume 47, pages 33-38

Published in Jour Washington Acad Sci, in 1957, in volume 47, pages 69-77

Published in Jour Washington Acad Sci, in 1957, in volume 47, pages 84-88

Published in Jour Washington Acad Sci, in 1957, in volume 47, pages 150-152

Published in Jour Washington Acad Sci, in 1957, in volume 47, pages 273-274

Published in Jour Washington Acad Sci, in 1957, in volume 47, pages 340-342

Published in Jour Washington Acad Sci, in 1957, in volume 47, pages 343-345

Published in Jour Washington Acad Sci, in 1957, in volume 47, pages 346-353

Published in Jour Washington Acad Sci, in 1957, in volume 47, pages 411-414

Published in Jour Washington Acad Sci, in 1957, in volume 47, pages 24

Published in Jour Washington Acad Sci, in 1957, in volume 47, pages 78-83

Published in Jour Washington Acad Sci, in 1957, in volume 47, pages 109-111

Published in Jour Washington Acad Sci, in 1957, in volume 47, pages 306-308

Published in Jour Washington Acad Sci, in 1957, in volume 47, pages 369

Published in Journal of The Washington Academy of Sciences, in 1957, in volume 47, pages 11-16

Published in Journal of The Washington Academy of Sciences, in 1957, in volume 47, pages 168

Published in Journal of the Washington Academy of Sciences, in 1957, in volume 47, pages 309-315

Published in Journal of the Washington Academy of Sciences, in 1957, in volume 47, issue 4, pages 117-126