Published in University of Kansas Science Bulletin, in 1969, in volume 48, pages 269-279

Published in University of Kansas Science Bulletin, in 1969, in volume 48, pages 281-296

Published in University of Kansas Science Bulletin, in 1969, in volume 48, pages 307-313

Published in University of Kansas Science Bulletin, in 1969, in volume 48, pages 585-687

Published in University of Kansas Science Bulletin, in 1969, in volume 48, pages 785-790

Published in University of Kansas Science Bulletin, in 1969, in volume 48, issue 10, pages 297-305

Published in Kansas Univ. Sci. Bull., in 1969, in volume 48, issue 12, pages 315-323

Published in Kansas University Science Bulletin, in 1969, in volume 48, issue 13, pages 325-524