Rowles, Emmett2016-04-262016-04-261922https://hdl.handle.net/11299/179610University of Minnesota Masters thesis. 1922. Major: Animal Biology. Advisor: Professor E. J. Lund, Professor Nachtrieb, Professor T. C. Frye. 1 computer file (PDF); 87 pages.enAnimal BiologyThe Relation of the Respitatory Exchange to Differentiation, Dedifferentiation, and Polarity in Obelia Sp.Thesis or Dissertation