Published in Journal of The Washington Academy of Sciences, in 1968, in volume 58, pages 7-9

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

Published in Journal of The Washington Academy of Sciences, in 1968, in volume 58, pages 69-74

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

Published in Journal of The Washington Academy of Sciences, in 1968, in volume 58, pages 189-90

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