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2. La théorie de l’information appliquée à la productivité de la microfaune du sol;Cancela da Fonseca,1967
3. Analysis of the animal community in a beech forest floor;Drift;Tijdschr. Ent,1951
4. Epiphytic cryptostigmatid mites on some beech and birch trees in Denmark;Gjelstrup;Pedobiologia,1979
5. Microarthropods from Danish soils;Haarløv;Oikos Suppl,1960