1975 Report of Random Sample Egg Production Tests, United States and Canada: Two-year Combined Summary, 1973-74 and 1974-75, Range Group Rankings, 1974-75
A. S. Rogowski · Charles L. Goulston · Jerry O. Newman · R. A. Kilpatrick · Virginia Harrington · United States. Agricultural Research Service · Louis Powers Reitz · United States. Agricultural Research Service. Northeastern Region · F. A. Jimenez
ene 1972 · Agricultural Research Service, U.S. Department of Agriculture