Published in University of Kansas Science Bulletin, in 1929, in volume 19, pages 53-62

Created: 2009-12-23, modified: 2023-02-16

Published in University of Kansas Science Bulletin, in 1929, in volume 19, pages 63-65

Created: 2009-12-23, modified: 2023-02-16

Published in University of Kansas Science Bulletin, in 1929, in volume 19, pages 67-69

Created: 2009-12-23, modified: 2023-02-16