1. Population respiration: A theoretical approach.;ägren;Ecol. Model.,1980
2. Meteorological conditions and soil climate of four cropping systems: Measurements and simulations from the project “Ecology of Arable Land”.;Alvenäs,1986
3. Microcomputer-controlled extractor for soil microarthropods.;Andren;Soil Biol. Biochem.,1985
4. The abundance of soil animals (Microarthropoda, Enchytraeidae, Nematoda) in a crop rotation dominated by ley and in a rotation with varied crops.;Andren,1980
5. Soil faun¿i (microarthropods, cnchytraeids, nematodes) in Swedish agricultural cropping systems.;Andren;Acta Agric. Scand.,1983