Published in Journal of The Washington Academy of Sciences, in 1970, in volume 60, pages 48-53

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

Published in Journal of The Washington Academy of Sciences, in 1970, in volume 60, pages 60

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

Published in Journal of The Washington Academy of Sciences, in 1970, in volume 60, pages 88-92

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

Published in Journal of The Washington Academy of Sciences, in 1970, in volume 60, pages 158-159

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