Published in Proceedings of the Biological Society of Washington, in 1957, in volume 70, pages 1-8
Published in Proceedings of the Biological Society of Washington, in 1957, in volume 70, pages 9-16
Published in Proceedings of The Biological Society of Washington, in 1957, in volume 70, pages 17-19
Published in Proceedings of the Biological Society of Washington, in 1957, in volume 70, pages 21-30
Published in Proceedings of The Biological Society of Washington, in 1957, in volume 70, pages 31-32
Published in Proceedings of The Biological Society of Washington, in 1957, in volume 70, pages 33-34
Published in Proceedings of The Biological Society of Washington, in 1957, in volume 70, pages 35-40
Published in Proceedings of The Biological Society of Washington, in 1957, in volume 70, pages 43-44
Published in Proceedings of The Biological Society of Washington, in 1957, in volume 70, pages 45-47
Published in Proceedings of The Biological Society of Washington, in 1957, in volume 70, pages 49-60
Published in Proceedings of The Biological Society of Washington, in 1957, in volume 70, pages 61-68
Published in Proceedings of the Biological Society of Washington, in 1957, in volume 70, pages 69-109
Published in Proceedings of The Biological Society of Washington, in 1957, in volume 70, pages 111-117
Published in Proceedings of The Biological Society of Washington, in 1957, in volume 70, pages 119-127
Published in Proceedings of The Biological Society of Washington, in 1957, in volume 70, pages 129-180
Published in Proceedings of The Biological Society of Washington, in 1957, in volume 70, pages 181
Published in Proceedings of The Biological Society of Washington, in 1957, in volume 70, pages 183-187
Published in Proceedings of The Biological Society of Washington, in 1957, in volume 70, pages 189-191
Published in Proceedings of The Biological Society of Washington, in 1957, in volume 70, pages 193
Published in Proceedings of The Biological Society of Washington, in 1957, in volume 70, pages 195-200
Published in Proceedings of the Biological Society of Washington, in 1957, in volume 70, pages 201-204
Published in Proceedings of The Biological Society of Washington, in 1957, in volume 70, pages 205-207
Published in Proceedings of The Biological Society of Washington, in 1957, in volume 70, pages 209-212
Published in Proceedings of The Biological Society of Washington, in 1957, in volume 70, pages 213-215