A New Type Laser Centering Interferometer and Evaluation of Centering Accuracy of the Lenses

von Shuguang, Zhang
Veröffentlicht in Multinational Instrumentation Conference (2. : 1986 : Peking) MICONEX '86 ; part 2 (1986)

Organisation, planning and efficiency : an inquiry into the superiority of the socialist economic system

von Tian, Jianghai
Veröffentlicht in Social sciences in China (1981)