Thiel, George Alfred2016-04-262016-04-261920-04https://hdl.handle.net/11299/179516University of Minnesota Masters thesis. April 1920. Major: Biology. 1 computer file (PDF); 49, 7 pages.enBiologyThe Development of the Mammalian Spleen, with Special Reference to its Hematopoietic ActivityThesis or Dissertation