ocr: Search Help Tog geti the results you want, sometimes you have to change the order of your search criteria. Ineffective Criteria Sequence Effective Criteria Sequence Category: Social Issues Time Period: 1950-1959 AND OR Time eriod:1950-1959 Time eriod:196U-1969 OR AND Time Period:1960-1969 Category: Social Issues TIME PERIODY TIME PERIODY CATEGORY TIME PERIOD 1950-1959 1960-1969 Social Issues 1950-1959 CATEGORY Social Issues TIME PERIOD 1960-1969
