CA 4948 CA 5135 CA 5134 Argued January 21, 1976. Affirmed in part; reversed in part March 22, opinion modified May 17 ( 25 Or. App. 407, 549 P.2d 1141), reconsideration denied July 14, 1976. Petition for review denied September 21, 1976. Judicial Review from Employment Relations Board. Henry H. Drummonds, Eugene, argued the cause for petitioners-cross-respondents. With him on the briefs were Kulongoski, Heid, Durham Drummonds, Eugene. Bruce Smith, Eugene, argued the cause for respondents-cross-petitioners