Management by Objectives (MBO) as it has been implemented in the Houston Academy of Medicine--Texas Medical Center Library is described. That MBO must be a total management system and not just another library program is emphasized throughout the discussion and definitions of the MBO system parts: (1) mission statement; (2) role functions; (3) role relationships; (4) effectiveness areas; (5) objective; (6) action plans; and (7) performance review and evaluation. Examples from the library's implementation are given within the discussion of each part to give the reader a clearer picture of the library's actual experiences with the MBO process. Tables are included for further clarification. In conclusion some points are made which the author feels are particularly crucial to any library MBO implementation.