Landwirtschaftliches Zentralblatt.

v.1 1955-1956; v.2 1957; v.3 1958; v.5 no.1-6 1960; v.5 no.7-9 1960; Classification System 1961; v.6 no.9-12 1961; 1962 System; v.7 no.1-8 1962; v.7 no.9-12 1962; v.8 no.1-6 1963; v.8 no.7-12 1963; v.9 no.1-6 1964; v.9 no.7-12 1964; v.10 no.1-6 1965; v.10 no.7-12 1965; v.11 no.1-6 1966; v.11 no.7-12 1966; v.12 no.1-6 1967; v.12 no.7-12 1967; v.13 no.1-6 1968; v.13 no.7-12 1968; v.14 no.1-6 1969; v.14 no.7-12 1969; v.15 no.1-6 1970; v.15 no.7-12 1970; v.16 no.1-4 1971; v.16 no.5-8 1971; v.16 no.9-12 1971; v.17 no.1-4 1972; v.17 no.5-8 1972; v.17 no.9-12 1972; 1973; v.18 no.2-4 1973; v.18 no.5-8 1973; v.18 no.9-12 1973; v.19 no.1-4 1974; v.19 no.5-8 1974; v.19 no.9-12 1974; v.20 no.1-4 1975; v.20 no.5-8 1975; v.20 no.9-12 1975; v.21 no.6 1976; v.21 no.7 1976; v.21 no.10 1976; 1959 Index; index; v.7 1962 Index; v.8 1963 Index; v.9 1964 Index; v.10 1965 Index; v.11 1966 Index; v.12 1967 Index; v.13 1968 Index; v.14 1969 Index; 1974 Index; 1973 Index; v.4 1959 Subj. Index; 1970 Index; 1970 Author Index; 1975 Index