25. Have you ever completed a full time vocational course of three months or longer?
[] Yes, apprenticeship course
[] Yes, other full time vocational
[] No: go to question 26.
c) When did you complete this course or apprenticeship?
[] 1946-1955
[] 1956-1960
[] 1961-1965
[] 1966-1968
[] 1969-1971