(3NdGaI Hfj GejI (B/ s - (3YGbd, fHjg, s ([(3HjQhJ, dHfGf(B] : s (3OGQ GdacQ, (B394 (3g`(B. = 1975.s, 1975)
(3GdYfhGf Ydi GdZdGa (B: (3JGQjN NdGaI Hfj GejI(B.s
(3jJVef GQLGYGJ HHdjhLQGajI (B: (3UaMI (B387-396.s
Keywords: (3GdOhdI GdGehjIs -- (3JGQjN(B.s; (3GdJGQjN GdGSdGejs -- (3GdYUQ GdGehj, (B661-750.s