Published in Bulletin of the Southern California Academy of Sciences, in 1968, in volume 67, pages 40-48

Published in Bulletin Southern California Academy of Sciences, in 1968, in volume 67, pages 112-124

Published in Bulletin Southern California Academy of Sciences, in 1968, in volume 67, pages 138-142

Published in Bulletin Southern California Academy of Sciences, in 1968, in volume 67, pages 143-154

Published in Bulletin Southern California Academy of Sciences, in 1968, in volume 67, pages 155-158

Published in Bulletin Southern California Academy of Sciences, in 1968, in volume 67, pages 178-181

Published in Bulletin Southern California Academy of Sciences, in 1968, in volume 67, pages 182-195

Published in Bulletin Southern California Academy of Sciences, in 1968, in volume 67, pages 196-198

Published in Bulletin Southern California Academy of Sciences, in 1968, in volume 67, pages 203-218

Published in Bulletin Southern California Academy of Sciences, in 1968, in volume 67, pages 219-232

Published in Bulletin Southern California Academy of Sciences, in 1968, in volume 67, pages 245-254

Published in Bulletin of the Southern California Academy of Sciences, in 1968, in volume 67, issue 4, pages 233-239