Korean Journal of Environment and Ecolog Vol.16 2 (2002.08) pp.131-140
Korean Journal of Environment and Ecolog Vol.15 4 (2002.03) pp.394-400
Korean Journal of Environment and Ecolog Vol.9 2 (1996.03) pp.197-201
Korean Journal of Environment and Ecolog Vol.7 2 (1994.02) pp.187-191
Korean Journal of Environment and Ecolog Vol.6 2 (1993.02) pp.162-167