2000 - User's Guide to Natural Gas Purchasing and Risk Management (Hardcover) ISBN-13: 9780130179319 ISBN-10: 0130179310 Genres: Business & Money, Science & Math ? 1997 - Cogeneration Management Reference Guide (Other) ISBN-13: 9780137432615 ISBN-10: 0137432615 Genres: Business & Money, Reference, Science & Math, Engineering & Transportation, Substores ? |