(3YdGbI Gdbdb HGdJQJjH GdPgfj (B:s (3HMK JLQjHj (B/s - (3GdcjGd, OMGes ((3GdbGgQI (B:s (3GdcJGH ddfTQ ;s (3HjQhJ (B:s (3GdeDSSI GdLGeYjI ddOQGSGJ hGdfTQ hGdJhRjY,s, 1990)
(3jTJed Ydi bGFeI eUWdMGJ(B.s
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3Gdbdb (B((3Yde GdfaS(B)s; (3GVWQGHGJ GdTNUjIs