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
Veterinarians now have available vitamin preparations which are intended for use as specific drugs in the prophylaxis and therapy of disease processes. Use of these products requires knowledge of indications for their use in rational therapy. This article is intended to aid in presenting this information for vitamin A.
Spurrell, F. A.
"Vitamin A In Veterinary Medicine,"
Iowa State University Veterinarian: Vol. 8
, Article 5.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol8/iss3/5