Schwartz, Beverly, 1949- Rippling : how social entrepreneurs spread innovation throughout the world / Beverly Schwartz ; foreword by Bill Drayton. - 1st ed. - San Francisco : Jossey-Bass, 2012 - xviii, 269 p. ; 24 cm. ISBN: 9781118138595 (cloth) 1118138597 (cloth) Subjects--Topical Terms: Social entrepreneurship.Social change. Dewey Class. No.: 338 / SCH