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 question of veterinary involvement in milking machine (M M) analysis is controversial. It is the opinion of some that MM matters should be left to the MM serviceman's judgment. The veterinarian should have an advisory role in MM management.
Thomas, J. F.; Johanns, C. J.; and McDonald, J. S.
"Field Testing of Milking Machines by the Veterinarian,"
Iowa State University Veterinarian: Vol. 34
, Article 6.
Available at: https://lib.dr.iastate.edu/iowastate_veterinarian/vol34/iss1/6