TY - GEN AU - Loo,J C AU - Brien,R TI - Analysis of norethindrone in plasma by high-performance liquid chromatography SN - 0148-3919 PY - 1982///0311 KW - Contraception KW - Contraceptive Agents KW - Contraceptive Agents, Female KW - Contraceptives, Oral KW - Family Planning Services KW - Norethindrone KW - Research N1 - Publication Type: Journal Article UR - https://doi.org/10.1080/01483918108059981 ER -