Tria, Geraldine E. Group dynamics/ Tria, Geraldine E. - Manila : Rex Book Store, Inc. , c2009 - x, 172 p. : ill. ; 21 cm. Includes bibliographical references. ISBN: 978-971-23-5325-3. Subjects--Topical Terms: Social groups. Dewey Class. No.: Fil. 302.3 T821g 2009