1. An International Study of Health Expenditure;Abel-Smith,1967
2. Workshop—education in ultrasound;Bark,1983
3. A study of explicit grey-tone perception on TV video monitors;Breyer,1982
4. How to introduce diagnostic ultrasound in medical institutions of limited resources;Chaves,1983
5. Ultrasound in remote and rural areas;Garrett;Med. J. Austr.,1985