7Berka C, Schreier H, Hall K.Linding Water quality with agrieultural intensifieation in a rural Watershed Whter.Air and Soil Pollution, 2001,127:389-401.
8Berka C, Schreier H., Hall K. Linding Water quality with agrieul- rural intensifieation in a rural Water- shed Whter. Air and Soil Pollution, 2001, 127: 389-401.
