Published in University of Kansas Science Bulletin, in 1935, in volume 22, pages 203-205

Published in University of Kansas Science Bulletin, in 1935, in volume 22, pages 207-218

Published in University of Kansas Science Bulletin, in 1935, in volume 22, pages 219-223

Published in University of Kansas Science Bulletin, in 1935, in volume 22, pages 249-401

Published in University of Kansas Science Bulletin, in 1935, in volume 22, pages 493-519

Published in The University of Kansas Science Bulletin, in 1935, in volume 22, issue 6, pages 119-155

Published in The University of Kansas Science Bulletin, in 1935, in volume 22, issue 7, pages 157-183

Published in The University of Kansas Science Bulletin, in 1935, in volume 22, issue 8, pages 185-201