TY  - BOOK
AU  - Trimbereger,George W.
TI  - Breeding Efficiency in Dairy Cattle from Artificial Insemination at Various Intervals before and after Ovulation
T2  - University of nebraska college of agriculture. Agricultural experiment Station. research Bulletin ; 
PY  - 1948///
CY  - Lincoln, Nebraska : 
PB  - University of Nebraska, 
ER  -