Published in University of Kansas Science Bulletin, in 1936, in volume 24, pages 469-473

Published in University of Kansas Science Bulletin, in 1936, in volume 24, pages 475-503

Published in University of Kansas Science Bulletin, in 1936, in volume 24, pages 505-537

Published in University of Kansas Science Bulletin, in 1936, in volume 24, pages 539-693

Published in University of Kansas science bulletin, in 1936, in volume 24, issue 12, pages 187-201