Healey, Joseph F., Statistics : a tool for social research / Joseph F. Healey & Steven G. Prus - second canadian edition - Toronto Thomson / Wadsworth, c2009. - xxii, 507 p. : ill. ; 24 cm. Includes index ISBN: 9780176651367 LCCN: 2007936259 Subjects--Topical Terms: Social sciences--Statistical methods.Statistics. LC Class. No.: HA29 / .H39 2009 Dewey Class. No.: 519.5024