Proceedings of the Robert A. Welch Foundation Conferences on Chemical Research. Proc. Robert A. Welch Found. Conf. Chem. Res. Robert A. Welch Foundation Conference on Chemical Research. Chemistry Research Congresses. 543.04 MIP 1st- has also distinctive title. Each conference covers one aspect of chemical research. Houston, Tex. : Rice Hotel, c1957. c1957. 1957 Text Collection xi, 168 p. : eng