524 P.2d 232 JOHN J. BONICA et al., Petitioners, v. GORDON W. GRACIAS et al., Respondents. No. 43086.The Supreme Court of Washington. En Banc. July 11, 1974. [1] Negligence — Contributory Negligence — Evidence — Burden of Proof. The burden of introducing substantial evidence, or evidence from which it can be reasonably inferred, that a […]