(3TQM GdbGfhf GdeOfj GdchjJj (B:s (3fXQjI GdMb (B/s - (3GdHjg, eMSf YHO GdMejO EHQGgjes ((3GdchjJ (B:s (3ecJHI GdUaGQ,s, 1989)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdbGfhf GdeOfjs -- (3GdchjJs