Richardson, D.; Smith, E.F.; Koch, B.A.; Boren, F.W.; Cox, R.F.
(Kansas Agricultural Experiment Station, 1959)
Forty Hereford steer calves from the same herd were divided as equally
as possible, on the basis of weight and conformation, into four lots of 10 animals each. Two additional steers became available 10 days after the
test ...