TY  - GEN
AU  - Lunstra,D D
AU  - Laster,D B
TI  - Influence of single-sire and multiple-sire natural mating on pregnancy rate of beef heifers
SN  - 0093-691X
PY  - 2012///1002
N1  - Publication Type: Journal Article
UR  - https://doi.org/10.1016/0093-691x(82)90159-5
ER  -