Published in Proceedings of the California Academy of Sciences, in 1952, in volume 27, pages 177-312

Published in Proc. Calif. Acad. Sci. (4), in 1952, in volume 27, pages 311-323

Published in Proc. Calif. Acad. Sci., in 1952, in volume 27, pages 325-358

Published in Proceedings of the California Academy of Sciences, in 1952, in volume 27, pages 359-374

Published in Proceedings of the California Academy of Sciences, in 1952, in volume 27, pages 375-376

Published in Proc. Calif. Acad. Sci. (4), in 1952, in volume 27, pages 377-381

Published in Proc. Calif. Acad. Sci. (4), in 1952, in volume 27, pages 383-387

Published in Proc. Calif. Acad. Sci. (4), in 1952, in volume 27, pages 389-392

Published in Proc. Calif. Acad. Sci. (4), in 1952, in volume 27, pages 393-397

Published in Proceedings of the California Academy of Sciences, in 1952, in volume 27, pages 399-432

Published in Proc. Calif. Acad. Sci., San Francisco, in 1952, in volume 27, pages 433-591