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By "Pugh, Evan, 18th-cent"
On the sources of the nitrogen of vegetation; with special reference to the question whether plants assimilate free or uncombined nitrogen.
By: Lawes, J. B. (John Bennet), - Gilbert, Joseph Henry, Sir, - Pugh, Evan,
Publication info: London,Printed by Taylor and Francis,1862.
Holding Institution: Cornell University Library