(3JGQjN GdGfHGQ (B/ s - (3GdgGTej, Ydj Hf GdMSjf, s ((3HjQhJ, dHfGf (B: s (3OGQ GdKbGaI (B971.s, 1971)
(3jJVef cTGaGJ(B.s
(3jJVef GQLGYGJ HHdjhLQGajI (B: (3UaMI (B217-219.s
Keywords: (3GdGfHGQ (B((3GdYQGb(B)s -- (3JGQjN(B.s