TY  - RPRT
TI  - Twinning in cattle.
AU  - L E Rowson
AU  - R A Lawson
AU  - R M Moor
PY  - 1969
DO  - 10.1136/vr.85.21.583
UR  - https://pubmed.ncbi.nlm.nih.gov/5356928/
ID  - 5356928
ER  -