1. Measurement and mapping of land resources data by point sampling on aerial photographs;Alford,1974
2. An evaluation of the use of grid squares in computerised choropleth maps;Browne;Cartographic Journal,1983
3. Report on the conditions of grazing in Tribal Trust Land;Cleghorn;Rhodesia Agricultural Journal,1966
4. Surveys and mapping in Zimbabwe;Cole;Paper presented at Commonwealth Association of Survey and Land Economy Conference in August, University of Zimbabwe,1983
5. Soil erosion survey: the condition of the arable land in the farming areas of Rhodesia;Elwell,1974