TY - BOOK AU - Bhatti, M.A. AU - Pister, K.S., coaut.Polak, E., coaut. ED - University of California, Earthquake Engineering Research C-enter TI - Optimal design of an earthquake isolation system / by M.A. -Bhatti, K.S. Pister and E. Polak CY - Berkeley, Calif. : University of California, College of Engineering N1 - "Prepared under the sponsorship of National Science Foundat-ion Grant ENV76-04264" ER -