Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 3
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 4-10
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 11
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 12-14
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 48-51
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 52-59
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 63-68
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 68-78
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 91-108
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 109-125
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 129-134
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 135-144
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 158-179
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 195-198
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 209-213
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 213-217
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 223-233
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 234-235
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 289-291
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 292-294
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 295-298
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 298-302
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 302-303
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 303-308
Published in Journal of The Washington Academy of Sciences, in 1974, in volume 64, pages 308-323