Johansson, Ingvar Ontological investigations : an inquiry into the categories of nature, man, and society / Ingvar Johansson - London : Routledge, c1989 - vi, 377 p. : ill. ; 22 cm. Includes bibliographical references and index ISBN: 0415025885 : PND 30.00 Subjects--Topical Terms: OntologyCategories (Philosophy)Intentionality (Philosophy) Dewey Class. No.: 110