Heavy work Investment: Its Nature, Sources, Outcomes, and Future Directions by Itzhak Harpaz/ edited by Itzhak Harpaz and Raphel Snir - New York Routledge c2015 - xxxviii, 388p.: ill. includes index and bibliographical references ISBN: 9780415835060 Subjects--Topical Terms: Dewey Class. No.: 158.7