138 N.W.2d 895 LEO W. SAYLES et al., appellants, v. BENNETT AVENUE DEVELOPMENT CORPORATION and CITY OF COUNCIL BLUFFS, appellees. No. 51787.Supreme Court of Iowa. December 14, 1965. Rehearing Denied February 8, 1966. DECLARATORY JUDGMENT: Force limited to issues decided. A 1 declaratory judgment determining the validity of a contract has no greater force than […]