Council of Scientific and Industrial Research (1969) Improvements in or relating to chemical benefication of ilmenite. 110153.

Counsil of Scientific and Industrial Research (1968) Improvements in or relating to chemical deposition of thin films of lead selenide layers. 110877.

Council of Scientific and Industrial Research (1962) Improvements in or Relating to the Electrolytic Derusting of Corroded Metal Parts. 74680.