na INLIS000000000071285 20170801021829 0010-071700000012237 170801 | eng Social Entrepreneurship for the 21st Century : Innovation Across the Nonprofit, Private, and Public Sectors / Georgia Levenson Keohane Keohane, Georgia Levenson New York : McGraw Hill, 2013 viii,263 p.; ill. ; 23 cm. 978-0-07-180168-3 658.408 658.408 Keo s 01 SOCIAL ENTREPRENEURSHIP 274116812