The Custodial Work Supervisor Passbook® prepares you for your test by allowing you to take practice exams in the subjects you need to study. It provides hundreds of questions and answers in the areas that will likely be covered on your upcoming exam, including but not limited to: building cleaning; building operation and maintenance; ability to read and follow complex written instructions; supervision; and more. | Custodial Work Supervisor (c-1231) by National Learning Corporation, Paperback | Indigo Chapters