Clough, Ray W., 1920- Dynamics of structures / Ray W. Clough, Joseph Penzien. - xxii, 634 pages : illustrations ; 24 cm. Includes index. ISBN: 0070113920 : $19.50 LCCN: 74026963 Subjects--Topical Terms: Structural dynamics. LC Class. No.: TA654 / .C6 Dewey Class. No.: 624.171