Two titles in a single booklet. The A.A. Service Manual opens with history of A.A. services, then explains the General Service Conference structure and its year-round importance. Chapters cover the roles of GSRs, DCMs, delegates, directors and trustees, as well as what happens at GSO and Grapevine. The Twelve Concepts for World Service, written by A.A. co-founder Bill W., are an interpretation of A.A.?s world service structure as it emerged through A.A.?s early history and experience. Soft cover.