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By "Putnam, John Jacob, (Born - 1873)"
The bacteria of Nebraska soil with special reference to the fixation of nitrogen, annomification, denitrification and in non-protein media. Including observations on the reduction of nitrates by soil bacteria in general.
By: Putnam, John Jacob,
Publication info: Lincoln, Nebr.,1913.
Contributed by: University of California Libraries (archive.org)