"The Use of first records versus the average of all records in dam-daughter comparisons when proving sires."; "Putnam, Dexter Nevins, 1916-", "Bowling, G. A. (George Augustus), 1902-", "Conklin, C. T."; "Dairy cattle--Breeding."; "Conklin, C. T.", "Putnam, Dexter Nevins, 1916-", "Bowling, G. A. (George Augustus), 1902-"; "1943"; "Journal article reprint from: Journal of Dairy Science, v.26:no.10 (1943:Oct.)."; ""; "P17766"; "pec"; "Dairy cattle--Breeding."; "14256"; .