STATEMENT CITED
White House deputy press sec G L Warren says on June 26 that Nixon stands by his May 22 statement on Watergate case, which conflicts with J W Dean 3d testimony to Sen com that Pres was involved in cover-up; statement held Nixon was unaware of his aides' cover-up efforts; Warren refuses to comment directly on Dean testimony; gives impression Nixon is more concerned with carrying out duties on domestic and foreign affairs than with Watergate case; says he seems in 'very good mood'
