Davies, Donald. Commencement of laytime / Donald Davies. - 3rd ed. - London : LLP Professional Publishing, 1998. - xxi, 292 p. ; 24 cm + hbk. Includes index. ISBN: 1859781969 Subjects--Topical Terms: Lay days--Great Britain.Demurrage--Great Britain. Dewey Class. No.: 344.203967