Manfred Weissenbacher

Sources of Power: How Energy Forges Human History [2 Volumes]  Manfred Weissenbacher Hardcover. Praeger, 2009-09-30 ISBN 9780313356261     Sources of Power: How Energy Forges Human History: Sources of Power: How Energy Forges Human History, Vol. 2 - The Oil Age and Beyond (Praeger Perspectives)  Manfred Weissenbacher Hardcover. Praeger, 2009-09-30 ISBN 9780313356308     Sources of Power: How Energy Forges Human History: How Energy Forges Human History  Manfred Weissenbacher Hardcover. ISBN 9780313356278