RT Web Page SR Electronic(1) ID 3258516047 A1 K. Gersten T1 Developing Duct Flow YR 2017 FD 2017-07-13 NO Ducts PB Begell House Inc. PP New York RD 2024-11-25 UL https://hedhme.com/content_map/?article_id=16047&link_id=32585 WT HEDH Multimedia - Heat Exchanger Design Handbook, Multimedia Edition WP 2017-07-13