Clark, J. Allen (Jacob Allen), b. 1888 & Bayles, B. B. (Burton Bernard), 1900-. Varieties of club wheat., book, 1940; (https://digital.library.unt.edu/ark:/67531/metadc1510/m1/1/: accessed April 23, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .