Published in Proc Calif. Acad. Sci. (4), in 1961, in volume 30, pages 47-66

Created: 2009-12-24, modified: 2011-10-03

Published in Proceedings of the California Academy of Sciences, in 1961, in volume 30, pages 67-80

Created: 2011-06-28, modified: 2011-06-28

Published in Proc. Calif. Acad. Sci. (4), in 1961, in volume 30, pages 81-90

Created: 2009-12-24, modified: 2011-06-21