This article continues a series of annual bibliographic updates of the published literature (since 1980) on distillation and other equilibrium-staged. separation processes.([1-10]) This article provides a useful and quick reference source to the 2001 journal literature (from the 50 most important chemical engineering journals) for researchers in this area. The following topics are included: Distillation Theory and Design Methods, Distillation Control and Applications, Column Design Data, Absorption Reactions and Absorber Design, Cooling Towers, Liquid-Liquid Extraction, and Supercritical Extraction. A complete bibliographic listing of the chemical engineering journal literature from 1959 to 2001 (with subsequent updates every six months) is available on a CD-ROM database([11]).