The orang-utan in Sarawak

Published in 1961 in Zoologica, volume 46, issue 6, on pages 73-82

Some observations on the metamorphosis of the frog Rana curtipes Jerdon

Published in 1961 in Zoologica, volume 46, issue 10, on pages 103-104
Authors: Lucy Lobo

Urinary amino acids of non-human primates

Published in 1961 in Zoologica, volume 46, issue 15, on pages 167-180
Authors: Jack Fooden

The role of the thyroid in the development of platyfish

Published in 1961 in Zoologica, volume 46, issue 16, on pages 181-222
Authors: K Baker-Cohen