1. Feeding commercial layers for maximum performance;Harms;Feedstuffs,1978
2. Revised specifications for feeding commercial layers based on daily feed intake;Harms;Feedstuffs,1979
3. Specifications for feeding commercial layers based on daily feed intake;Harms;Feedstuffs,1981
4. Unpublished data;Harms,1997
5. Hy-Line International, Dallas Center, IA 50063