Thiel, Geo A.2016-04-262016-04-261921-01https://hdl.handle.net/11299/179592University of Minnesota Masters thesis. January 1921. Major: Animal Biology. 1 computer file (PDF); (279-339) 61 pages.enAnimal BiologyThe Development of the Mammalian Spleen, with Special Reference to its Hematopoietic ActivityThesis or Dissertation