Report of the proceedings of the Industries Advisory Board : and of the Scientific and Technical Committee for the period 1st January to 30th September, 1918 : and of the Advisory Board of Industry and Science for the quarter ended 31st December, 1918 : presented to both Houses of Parliament by command of His Excellency the Governor-General
South Africa. Industries Advisory Board; South Africa. Scientific and Technical Committee; South Africa. Advisory Board of Industry and Science