XI International Colloquium on Soil Zoology, Jyväskylä, Finland, 10-14 August, 1992 - Haimi, Jari, 1960-; Huhta, Veikko, 1941-; Tomati, Umberto; Nagel, Roland F.; Scheu, Stefan; Biazrov, Lev G.; Boucelham, Mustapha; Brown, George G.; Didden, Wim; Haimi, Jari; Kuperman, Roman G.; Makulec, Grzegorz; et al. (Finnish Zoological and Botanical Publishing Board, 1995)