The Origin of Ova in the Adult Opossum, thesis, August 1938; (https://digital.library.unt.edu/ark:/67531/metadc29912/m1/1/: accessed April 17, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .
The Origin of Ova in the Adult Opossum, thesis, August 1938; (https://digital.library.unt.edu/ark:/67531/metadc29912/m1/1/: accessed April 17, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .