TY - RPRT TI - Embryo transfer techniques in handling repeat breeding cows. AU - R J Mapletoft AU - W H Johnson AU - D M Miller PY - 1980 DO - 10.1016/0093-691x(80)90033-3 UR - https://pubmed.ncbi.nlm.nih.gov/16725473/ ID - 16725473 ER -