Published in Journal of The Royal Society of Western Australia, in 1928, in volume 13, pages 37-48

Published in Journal of The Royal Society of Western Australia, in 1928, in volume 13, pages 49-60

Published in Journal of The Royal Society of Western Australia, in 1928, in volume 13, pages 73-77

Published in Journal of The Royal Society of Western Australia, in 1928, in volume 13, pages 79-86

Published in Journal of The Royal Society of Western Australia, in 1928, in volume 14, pages 1-6

Published in Journal of The Royal Society of Western Australia, in 1928, in volume 14, pages 7-21

Published in Journal of The Royal Society of Western Australia, in 1928, in volume 14, pages 23-28

Published in Journal of The Royal Society of Western Australia, in 1928, in volume 14, pages 45-56

Published in Journal of The Royal Society of Western Australia, in 1928, in volume 14, pages 57-59

Published in Journal of The Royal Society of Western Australia, in 1928, in volume 14, pages 61-77

Published in Journal of The Royal Society of Western Australia, in 1928, in volume 14, pages 79-85

Published in Journal of the Royal Society of Western Australia, in 1928, in volume 14, pages 29-41

Published in Journal of the Royal Society of Western Australia, in 1928, in volume 13, pages 61-68