1. Die gezielte Ausnutzung des mineralischen Stickstoffes beim Anbau von Leguminosen;Afanasewa;Sel'skochoz. Biol.,1983
2. The effects of Rhizobium inoculation and nitrogen fertilizer on grain yield and on seed nitrogen content of lupin;Amarger;Agronomic,1983
3. Inoculation of field grown wheat (Triticum aestivum) with Azospirillum spp. in Brazil;Baldani;Biol. Fertil. Soils,1987
4. Welche Stickstoffquellen stehen der Pflanze zu Gebote? Landwirtsch;Hellriegel;Versuchs-Stet.,1987
5. Assessing the environmental risks of releasing genetically manipulated organisms;Hirsch;Science and Change in Agricultural (AFRO),1988