المؤلفون: Richards, R. L.^Aff4, Smith, B. E.^Aff5

المساهمون: Smith, Barry E., editor^Aff1, Richards, Raymond L., editor^Aff2, Newton, William E., editor^Aff3

المصدر: Catalysts for Nitrogen Fixation : Nitrogenases, Relevant Chemical Models and Commercial Processes. 1:333-336

المؤلفون: Richards, R. L.^Aff5

المساهمون: Summerfield, R. J., editor^Aff1, Elmerich, C., editor^Aff2, Kondorosi, A., editor^Aff3, Newton, W. E., editor^Aff4

المصدر: Biological Nitrogen Fixation for the 21st Century : Proceedings of the 11th International Congress on Nitrogen Fixation, Institut Pasteur, Paris, France, July 20–25, 1997. 31:17-22

المؤلفون: Heppner, D. G., Gordon, D. M., Gross, M., Wellde, B., Leitner, W., Krzych, U., Schneider, I., Wirtz, R. A., Richards, R. L., Trofa, A., Hall, T., Sadoff, J. C., Boerger, P., Alving, C. R., Sylvester, D. R., Porter, T. G., Ballou, W. R.

المصدر: The Journal of Infectious Diseases, 1996 Aug 01. 174(2), 361-366.

URL الوصول: https://www.jstor.org/stable/30131615

المؤلفون: Leigh, G. J.^Aff4, Richards, R. L.^Aff5

المساهمون: Pedrosa, Fabio O., editor^Aff1, Hungria, Mariangela, editor^Aff2, Yates, Geoffrey, editor^Aff1, Newton, William E., editor^Aff3

المصدر: Nitrogen Fixation: From Molecules to Crop Productivity. 38:43-44

المؤلفون: Richards, R. L.

المصدر: The British Medical Journal, 1978 Apr 01. 1(6116), 834-835.

URL الوصول: https://www.jstor.org/stable/20418441

المؤلفون: Dilworth, J. R.^{Aff4, Aff5}, Henderson, R. A.^Aff4, Hughes, D. L.^Aff4, Leigh, G. J.^Aff4, Pickett, C. J.^Aff4, Richards, R. L.^Aff4

المساهمون: Evans, H. J., editor^Aff1, Bottomley, P. J., editor^Aff2, Newton, W. E., editor^Aff3

المصدر: Nitrogen fixation research progress : Proceedings of the 6th international symposium on Nitrogen Fixation, Corvallis, OR 97331, August 4–10, 1985. 1:639-644

المؤلفون: Richards, R. L.

المصدر: The British Medical Journal, 1962 Mar . 1(5281), 820-824.

URL الوصول: https://www.jstor.org/stable/20357170

المؤلفون: Richards, R. L.

المصدر: The British Medical Journal, 1957 Nov 01. 2(5053), 1091-1093.

URL الوصول: https://www.jstor.org/stable/25384394

المؤلفون: Richards, R. L.

المصدر: The British Medical Journal, 1953 Feb . 1(4808), 478-481.

URL الوصول: https://www.jstor.org/stable/25395374

المؤلفون: Richards, R. L.

المصدر: The British Medical Journal, 1963 Oct . 2(5363), 997-997.

URL الوصول: https://www.jstor.org/stable/25395994