580 P.2d 259 THE STATE OF WASHINGTON, Respondent, v. JOANNE BISHOP, ET AL, Appellants. No. 44962.The Supreme Court of Washington. En Banc. June 15, 1978. [1] Criminal Law — Evidence — Presumptions — Validity. An evidentiary presumption as to an element of a crime is constitutionally valid if it does not shift the ultimate burden […]