1955=33.1955/56,1A; 1956=34.1956/57,1A; 1957=35.1957/58,1A; 1959=36.1958/59,1A; 1960=37.1959/60,1A; 1961=38.1960/61,1A; 1962=39.1961/62,1A; 1963=40.1962/63,1A; 1964=41.1963/64,1A; 1965=42.1964/65,1A; 1966=43.1965/66,1A; 1967=44.1966/67,1A; 1968=45.1967/68,1A; 1968/69=45.1968,14A; 1969/70=46.1969,10A; 1970/71=47.1970,10A; 1971/72=1971,10A; 1972/73=1972,10A; 1973/74=1973,10A; 1974/75=1974,10A; 1979/80=1979,10A; 1980/81=1980,10A; 1981/82=1981,10A; 1982/83=1982,10A; 1983/84=1983,10A; 1984/85=1984,10A; 1985/86=1986,10A; 1986/87=1986,10A; 1988=1987,10A; 1989=1988,11; 1990=1989,11; 1991=1990,11; 1992=1991,11; 1993=1992,13; 1994=1993,12; 1995=1994,12; 1996=1995,12; 1997=1996,12; 1998=1997,13; 1999=1998,12 von: Modern plastics (ISSN: 0026-8275)