Cortina, Joe. Opening Doors : understanding college reading / Joe Cortina and Janet Elder. - 4th ed. - Boston : McGraw-Hill, c2005. - xxxiv, 734 p. : ill. (some col.), col. maps ; 24 cm. + Includes index. Includes glossary. ISBN: 0072871962 (pbk. : acidfree paper) 0072871970 (annotated instructor's ed. : acidfree paper) 9780072871968 ISSN: Subjects--Topical Terms: College readers.Reading (Higher education) Dewey Class. No.: 428.6 / COR