Postman, Neil. Teaching as a subversive activity [by] Neil Postman [and] Charles Weingartner. - New York, Delacorte Press [1969] - xv, 219 p. 22 cm. Source: 5.95 LCCN: 69011842 //r90 Subjects--Topical Terms: Education--United States. LC Class. No.: LA 217 / .P6