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
MMA (mastitis, metritis, agalactia) has in recent years become one of the most perplexing problems facing the pork producer. In a recent polling of members of the national Pork Producers Association (Octobre, 1968), MMA was listed as the number one swine health problem.
Striegel, Dave and Kunesh, Jerry
"MMA - A Clinical Review,"
Iowa State University Veterinarian: Vol. 36
, Article 8.
Available at: https://lib.dr.iastate.edu/iowastate_veterinarian/vol36/iss2/8