Published in Journal of The Washington Academy of Sciences, in 1973, in volume 63, pages 22-25

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Published in Journal of The Washington Academy of Sciences, in 1973, in volume 63, pages 26-31

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Published in Journal of The Washington Academy of Sciences, in 1973, in volume 63, pages 39-53

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Published in Journal of The Washington Academy of Sciences, in 1973, in volume 63, pages 54-60

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Published in Journal of The Washington Academy of Sciences, in 1973, in volume 63, pages 69-72

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Published in Journal of The Washington Academy of Sciences, in 1973, in volume 63, pages 73-75

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Published in Journal of The Washington Academy of Sciences, in 1973, in volume 63, pages 76-81

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

Published in Journal of The Washington Academy of Sciences, in 1973, in volume 63, pages 142-146

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Published in Journal of The Washington Academy of Sciences, in 1973, in volume 63, pages 147-153

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Published in Journal of The Washington Academy of Sciences, in 1973, in volume 63, pages 154-155

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Published in Journal of The Washington Academy of Sciences, in 1973, in volume 63, pages 156-159

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Published in Journal of The Washington Academy of Sciences, in 1973, in volume 63, pages 160-164

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Published in Journal of The Washington Academy of Sciences, in 1973, in volume 63, pages 165-168

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