1. Multiple range and multiple F test;Duncan;Biometrics,1955
2. How to beat the cost of high protein concentrates by reducing protein levels in grower rations;Harms;Feedstuffs,1973
3. Influence of protein restriction during growth period on subsequent performance of chickens;Harms;Fed. Proc.,1968
4. Low protein diets for replacement pullets;Harms;Feedstuffs,1967
5. Statistical Methods;Snedecor,1967