Published in Journal of The Washington Academy of Sciences, in 1986, in volume 76, pages 48-50

Published in Journal of The Washington Academy of Sciences, in 1986, in volume 76, pages 51-55

Published in Journal of The Washington Academy of Sciences, in 1986, in volume 76, pages 55-60

Published in Journal of The Washington Academy of Sciences, in 1986, in volume 76, pages 63-68

Published in Journal of The Washington Academy of Sciences, in 1986, in volume 76, pages 87-88

Published in Journal of The Washington Academy of Sciences, in 1986, in volume 76, pages 173-187

Published in Journal of The Washington Academy of Sciences, in 1986, in volume 76, pages 188-198

Published in Journal of The Washington Academy of Sciences, in 1986, in volume 76, pages 228-236

Published in Journal of The Washington Academy of Sciences, in 1986, in volume 76, pages 237-243

Published in Journal of The Washington Academy of Sciences, in 1986, in volume 76, pages 244-249