Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) M.A. Callaham and P.F. Hendrix,Relative abundance and seasonal activity of earthworms (Lumbricidae and Megascolecidae) as determined by hand-sorting and formalin extraction in forest soils on the southern Appalachian Piedmont,Soil Biology and Biochemistry,0038-0717,Elsevier BV,1997-03,29,3-4,317-321,https://cir.nii.ac.jp/crid/1363951796016024448,https://doi.org/10.1016/s0038-0717(96)00095-8