(3GNHGQ GdbQGeWI ai GdGMSGA(B-(3GdTGe(B-(3GdYQGb(B-(3Gdjef (B/ s - (3RcGQ (B: (3Sgjds ((3GdQjGV (B: s (3OGQ GdchKQ (B: s, 1989)
(3jTJed Ydi GQLGYGJ HjHdjhLQGajI (B((3U(B631-668) (3hcTGaGJs
Keywords: (3GdaQb GdGSdGejIs; (3GdbQGeWIs; (3GdbQGeWIs -- (3JGQjNs -- (3eUGOQs