Published in Journal of The Washington Academy of Sciences, in 1975, in volume 65, pages 19-32

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

Published in Journal of The Washington Academy of Sciences, in 1975, in volume 65, pages 33-35

Created: 2012-08-30, modified: 2012-08-30

Published in Journal of The Washington Academy of Sciences, in 1975, in volume 65, pages 36-40

Created: 2012-08-30, modified: 2012-08-30