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
A 9-year-old male Collie was admitted to the clinic on Feb. 9, 1951. The predominant symptom was frequent dribbling of urine. Its previous history was of interest.
"Urethral Calculi In A Dog,"
Iowa State University Veterinarian: Vol. 13
, Article 15.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol13/iss3/15