Published in Journal of The Washington Academy of Sciences, in 1969, in volume 59, pages 29-38

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

Published in Journal of The Washington Academy of Sciences, in 1969, in volume 59, pages 38-45

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

Published in Journal of The Washington Academy of Sciences, in 1969, in volume 59, pages 46-49

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

Published in Journal of The Washington Academy of Sciences, in 1969, in volume 59, pages 77-85

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

Published in Journal of The Washington Academy of Sciences, in 1969, in volume 59, pages 117-119

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

Published in Journal of The Washington Academy of Sciences, in 1969, in volume 59, pages 187-191

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

Published in Journal of The Washington Academy of Sciences, in 1969, in volume 59, pages 192-202

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