by Stephen H. Cradall and others. by Charles S. Gray and others. by H. M. Randall [and others] by Arthur W. Lo and others. by Melvin Calvin and others. by Hu Sheng, Liu Danian and others. by Ju Chin Chu and others. by C. H. Bamford and others. by H. W. Babel [and others] by James A. Richards [and others].