Published in Smithsonian Miscellaneous Collections, in 1960, in volume 140, issue 2, pages 1-11

Created: 2014-12-19, modified: 2014-12-19

Published in Smithsonian Miscellaneous Collections, in 1960, in volume 142, pages 1-61

Created: 2010-10-26, modified: 2017-05-15