Authors: N A Mackintosh | J F G Wheeler

Published in Discovery reports, in 1929, in volume 1, pages 257-540

Created: 2017-05-16, modified: 2017-05-16

Authors: H A Baylis

Published in Discovery reports, in 1929, in volume 1, pages 541-560

Created: 2013-01-24, modified: 2017-05-16