TY - RPRT TI - Attempts to induce conception in lactating sows. AU - H D Guthrie AU - V G Pursel AU - L T Frobish PY - 1978 DO - 10.2527/jas1978.4751145x UR - https://pubmed.ncbi.nlm.nih.gov/374325/ ID - 374325 ER -