TY - GEN AU - Livesey,F TI - Variations in contracts among publishers SN - 0007-1447 PY - 1979///0516 KW - Authorship KW - Economics KW - Manuscripts, Medical as Topic KW - Publishing N1 - Publication Type: Journal Article UR - https://doi.org/10.1136/bmj.1.6159.312 ER -