Iowa State University Veterinarian Records, RS 22/6/0/9, University Archives, Special Collections Department, Iowa State University, http://www.add.lib.iastate.edu/spcl/arch/rgrp/22-6-0-9.html
The prevention and control of mastitis, regardless of its cause, is definitely a herd management problem. Its success depends almost entirely upon the dairyman himself, his family and his employees. If they have the will and desire to control the disease it can be done, otherwise it will be a failure.
Hopson, G. H.
"The Importance Of Scientific Milking In Mastitis Control,"
Iowa State University Veterinarian: Vol. 7
, Article 2.
Available at: https://lib.dr.iastate.edu/iowastate_veterinarian/vol7/iss1/2