Based on the IFA Symposium held in Stockholm, Sweden, April 2-4, 1970. Sponsored by Ahlen-stiftelsen, Sven och Dagmar Salens stiftelse, and Roland Lundborg, M.D.
(1971)
Significance and implications in ecology and pest management : Papers discussed at the International conference on the significance of insect and mite nutrition, April 25-28, 1972, University of Kentucky, Lexington
(1972)
Proceedings of a Symposium on....jointly organized by the IAEA and the FAO of the United Nations, and held in Aix-En Provence, France, 18 - 22, April 1983
(1983)
![Национална конференция с международно участие на тема: „Биологични растениевъдство, животновъдство и храни”, [27-28 ноември 2014 г., Троян] [Електронен ресурс] : доклади, постери](https://eclipse.agriacad.bg/storage/img/52/1006/T0156348.jpg?1788914030)