The physical state condition in the BRST quantization of Chern-Simons field
theory is used to derive Gauss law constraints in the presence of Wilson loops,
which play an important role in explicitly establishing the connection of
Chern-Simons field theory with 2-dimensional conformal field theory.Comment: Some typetwritten errors have been corrected. A few formulas have
been modified to make the arguments clear. A little English have been
re-edite