@phdthesis{ Solr-4212773, title = {The biuret reactions of the hexapeptide, pentaglycylglycine, and the heptapeptide, hexaglycylglycine.}, author = {Saurwein, Jean Elizabeth, 1914-}, year = {1938}, school = {Thesis (Ph.D.)--University of Chicago, Department of Chemistry.}, }