Slessor, Catherine. Contemporary doorways : architectural entrances, transitions and thresholds / Catherine Slessor. - \London : Mitchell Beazley, 2002. - \176 p. : col. ill. ; 28 cm. \Includes index. ISBN: \1840005092 : Subjects--Topical Terms: Doorways LC Class. No.: NA3010 Dewey Class. No.: 721.822