Quantz, Karl Emil Eduard2015-11-132015-11-131916http://hdl.handle.net/10919/6400914, [6] leaves.application/pdfen-USCreative Commons Public Domain Mark 1.0LD5655.V855 1916.Q37Plant cells and tissuesAzotobacterPlants -- Effect of nitrogen onA study of the influence of the tissues of plants of various species upon bacterial nitrogen fixation, with special reference to AzotobacterThesis