https://catalogue-scientifique.canada.ca/record=4077753~S6*frc
Rechercher Wiggans, R. G; Rechercher Everett, H. L; Rechercher Johnson, A. A; Rechercher Otto, H; Rechercher Walden, David B; Rechercher Loesch, P. J; Rechercher Swarthout, J. W
Cornell University Agricultural Experiment Station, mars 1955
Livre