- Food and Agriculture Organization of the United Nations (5)
- International Atomic Energy Agency (4)
- European Meeting of Meat Research Workers, 15th, Helsinki, 1969 (2)
- Biass-Ducroux, Françoise (1)
- Chaianov, Aleksandr Vasil'evich, 1888-1939 (1)
- Helsinki. Yliopisto. Lihateknoligian laitos (1)
- International Congress of Soil Science (1)
- Kerblay, B. (1)
- Luchnik, Nikolaj V. (1)
- Napp-Zinn, Klaus, 1927- (1)
- Symposium on the Use of Isotope and Radiation Techniques in Soil Physics and Irrigation Studies (1)
- Symposium on the Use of Isotopes and Radiation in Entomology (1)
- Symposium on the Use of Isotopes in Plant Nutrition and Physiology (1966 : Vienna, Austria) (1)
- Symposium on the Use of Radioisotopes in Soil-Plant Nutrition Studies (1)
- Unesco (1)
- Voronin, A. D. (1)
- Wehler, Hans Ulrich (1)