Dairy & ice cream field.

v.148 no.1-6 1965-66; v.148 no.7-12 1966; v.149 no.1-6 1966-67; v.149 no.7-12 1967; v.151 no.1-6 1968-69; v.151 no.7-12 1969; v.152 no.1-6 1969-70; v.152 no.7-11 1970; v.153 1970; v.154 no.1-6 1971; v.154 no.7-12 1971; v.155 no.1-6 1972; v.155 no.7-12 1972; v.156 no.1-6 1973; v.156 no.7-12 1973; v.157 no.1-6 1974; v.157 no.7-12 1974; v.158 no.1-6 1975; v.158 no.7-12 1975; v.159 no.1-6 1976; v.159 no.7-12 1976; v.160 no.1-6 1977; v.160 no.7-12 1977; v.161 no.1-6 1978; v.161 no.7-12 1978; v.162 no.1-3 1979