(3fXQjI GdGdJRGe aj GdTQjYI GdGSdGejI hGdJTQjYGJ GdYQHjI(B. s (3GdcJGH GdGhd, s (3aj eUGOQ GdGdJRGe (B((3GdYbhO hGdYghO(B) / s - (3GdYWGQ, YHO GdfGUQ Jhajb, s ([(3GdbGgQI, eUQ(B] : s (3eWHYI GdSYGOI (B975.s, 1975)
(3jJVef EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdGdJRGeGJ (B((3abg GSdGej(B).s; (3GdGdJRGeGJs -- (3bhGfjf hJTQjYGJs -- (3GdHdGO GdYQHjI(B.s