1. Pennsylvania dairy production testing participant perceptions of and attitudes towards the Dairy Herd Improvement program: a statewide survey;Croyle;Pennsylvania State Univ. Ext. Stud.,1976
2. Official methods of analysis,1980
3. Means differ by .015% in collaborative study of Babcock and ether extraction fat tests;Marshall;J. Dairy Sci.,1985
4. An evaluation of the precision of reference test methods used in the analysis of milkfat in laboratory control samples;Packard;Dairy Food Sanit,1986
5. Use of Dairy Herd Improvement testing programs by dairy farmers;Schmidt;J. Dairy Sci.,1986