TY - GEN AU - GIBSON,J R AU - DOUGRAY,T TI - Period between ovulation and birth SN - 0007-1242 PY - 2003///0501 KW - Female KW - Humans KW - Ovulation KW - Parturition N1 - Publication Type: Journal Article UR - https://doi.org/10.1136/jech.7.3.160 ER -