TY  - RPRT
TI  - Modified contemporary comparisons for first and second lactations in the same and different herds.
AU  - B G Cassell
AU  - B T McDaniel
AU  - H D Norman
PY  - 1983
DO  - 10.3168/jds.s0022-0302(83)81791-3
UR  - https://pubmed.ncbi.nlm.nih.gov/6833603/
ID  - 6833603
ER  -