References
- Cawley , W. O. , Krueger , W. F. , Doran , Bill H. and Quisenberry , J. H. 1963 . An analysis of the 4th Texas Random Sample Egg Production Test . Poult. Sci. , 42 : 1259
- Ministry of Agriculture for Northern Ireland . 1963 . First Random Sample Laying Test (Commercial Stock) 1962–63
- Ministry of Agriculture for Northern Ireland . 1964 . Second Random Sample Laying Test (Commercial Stock) 1963–64
- Ministry of Agriculture for Northern Ireland . 1965 . Third Random Sample Laying Test (Commercial Stock) 1964–65
- Nordskog , A. W. 1960 . Importance of egg size and other factors in determining net income in random sample tests . Poult. Sci. , 39 : 327 – 338 .
- Roberts , C. W. and Deland , M. 1964 . A comparison of the economic traits between the 5th British Columbia and the 7th Ottawa Random Sample Egg Laying Tests . Poult. Sci. , 43 : 1063 – 1065 .
- Snedecor , George W. 1956 . Statistical methods, , 5th ed. , 285 – 289 . 413 – 438 . Ames : Iowa State College Press .