(3hMOI JGQjN eUQ (B/ s - (3ehSi, eMeO GdYRH, s ((3HjQhJ (B[(3dHfGf(B] : s (3GdeDSSI GdYQHjI ddOQGSGJ hGdfTQ (B972.s, 1972)
(3jJVef GQLGYGJ HHdjhLQGajI(B.s
Keywords: (3eUQs -- (3JGQjN(B.s; (3GdMVGQIs -- (3eUQ(B.s