Long Ashton Research Station, Hewitt, E. J., & Cutting, C. V. (1968). Recent aspects of nitrogen metabolism in plants: Proceedings of a symposium held at Long Ashton Research Station, University of Bristol, 18-19 April 1967. Academic P..

Long Ashton Research Station, E. J. Hewitt, a C. V. Cutting. Recent Aspects of Nitrogen Metabolism in Plants: Proceedings of a Symposium Held at Long Ashton Research Station, University of Bristol, 18-19 April 1967. London, New York: Academic P., 1968.

Long Ashton Research Station, et al. Recent Aspects of Nitrogen Metabolism in Plants: Proceedings of a Symposium Held at Long Ashton Research Station, University of Bristol, 18-19 April 1967. Academic P., 1968.