TY JOUR TI Superficial drain from farmsteads in krasnoselkupsky disctrict being a factor of the taz river contamination KW JO Bulletin of Nizhnevartovsk State University AU Storchak, T.V. AU Ryabukha, A.V. AU Ryabukha, E.A. PY 2015 IS PB Nizhnevartovsk State University