American Educational Research Journal Nr.1.2.3.4.4 1967

American Educational Research Journal Vol.1.2.3.4 1968

American Educational Research Journal Vol.V 1968

American Educational Research Journal Vol.VI 1969

American Educational Research Journal Vol.VII 1970

American Educational Research Journal Vol.VIII 1971

American Educational Research Journal Vol.IX 1972

American Educational Research Journal Nr.1.2.3.4 1973

American Educational Research Journal Nr.1.2.3.4 1974

American Educational Research Journal Nr.2.3.4 1975

American Educational Research Journal Nr.1.2.3.4 1976

American Educational Research Journal Nr.1.2.3.4 1977