Milligan, Stephen.-Cavanagh, Michael.-Vandelinde, Henry. Understanding Ultrasonic Level Measurement - Momentum Press 2013 ISBN: 9781606504413 Subjects--Topical Terms: Level indicators.,Ultrasonics. Subjects--Index Terms: TECHNOLOGY & ENGINEERING / Acoustics & Sound LC Class. No.: TA367 .M558 2013 Dewey Class. No.: 620.28