Published in Journal of The Washington Academy of Sciences, in 1921, in volume 8, pages 532-535

Created: 2014-01-30, modified: 2014-01-30

Published in Journal of the Washington Academy of Sciences, in 1921, in volume 11, pages 487-493

Created: 2015-01-19, modified: 2015-01-19

Published in Journal of The Washington Academy of Sciences, in 1921, in volume 11, issue 6, pages 125-135

Created: 2015-03-16, modified: 2015-03-16

Published in Journal of The Washington Academy of Sciences, in 1921, in volume 11, issue 7, pages 155-160

Created: 2015-03-16, modified: 2015-03-16

Published in Journal of The Washington Academy of Sciences, in 1921, in volume 11, issue 8, pages 173-189

Created: 2015-03-16, modified: 2015-03-16

Published in Journal of the Washington Academy of Sciences, in 1921, in volume 11, issue 18, pages 434-437

Created: 2015-01-19, modified: 2015-01-19