Ключевые слова:
Statistical testing|Extraction methods of analysis|Soil testing|Lumbricus|Statistical methods of analysis|Bibliography|Quality|Ecology|Land pollution|Animals|Test equipment|Experimental design|Field testing|Biological analysis and testing|Toxic materials|Fertilizers|Pesticides|Soils|Sampling methods|Testing conditions|Soil pollution|Toxicity|Soil science|Test specimens|Specimen preparation|Bioassay