http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
proceedings of the 6th International Symposium on Nitrogen Fixation, Corvallis, OR 97331, August 4-10, 1985
International Symposium on Nitrogen Fixation 1985 : Corvallis, Or.)
edited by H.J. Evans, P.J. Bottomley, W.E. Newton.
Current plant science and biotechnology in agriculture ; 1