A colourblind society /
ed. by H. Noak.
- Lusaka : United Northern Rhodesia Association, [1960]
- Proceedings of Study Conference ; no. 5 .
- 2 a18.2..1.37 b18.2..39.16 n18.2..56.8 1960 : c18.2..65.8 t18.2..74.12 .
Conference ... held at ... Lusaka on 6th & 7th Feb., 1960. Conference ... held at ... Lusaka on 6th and 7th Feb., 1960.