Published in Bulletin of The Southern California Academy of Sciences, in 1951, in volume 50, pages 25-33
Published in Bulletin of The Southern California Academy of Sciences, in 1951, in volume 50, pages 34-49
Published in Bulletin Southern California Academy of Sciences, in 1951, in volume 50, pages 50-54
Published in Bulletin of The Southern California Academy of Sciences, in 1951, in volume 50, pages 76-80
Published in Bulletin of The Southern California Academy of Sciences, in 1951, in volume 50, pages 86-88
Published in Bulletin of The Southern California Academy of Sciences, in 1951, in volume 50, pages 152-155
Published in Bulletin of The Southern California Academy of Sciences, in 1951, in volume 50, pages 156-158
Published in Bulletin of the Southern California Academy of Sciences, in 1951, in volume 50, issue 3, pages 119-127
Published in Bulletin of the Southern California Academy of Sciences, in 1951, in volume 50, issue 3, pages 136-151
Published in Bulletin of The Southern California Academy of Sciences, in 1951, in volume 50, issue 3, pages 159-163