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
Requests for laboratory aid in diagnosis of field cases are becoming more numerous and of a more varied nature. The advent of previously unrecognized disease conditions, as well as the increased knowledge of diagnostic aids in older recognized disease conditions, makes laboratory procedures a more vital part of everyday practice.
Seaton, Vaughn A.
"Specimens For Laboratory Diagnosis,"
Iowa State University Veterinarian: Vol. 23
, Article 4.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol23/iss2/4