@ARTICLE {BIRANG:2003, title = {Earthworm casting activity in cropped and undisturbed Chromolaena odorata and young forest fallow in southern Cameroon}, author = {Birang, A. and Hauser, S. and Brussaard, L. and Norgrove, L. }, journal = {Pedobiologia}, year = {2003}, volume = {47}, number = {5-6}, pages = {811--818}, }