(3JgPjH JGQjN OeTb GdcHjQ (B/ s - (3GHf YSGcQ(B: (3GHheMeO GdbGSe Ydi Hf GdMSf Hf gHI Gddg Hf GdMSjfs ((3HjQhJ (B: s (3OGQ GdeSjQI ddfTQ hGdJhRjY hGdWHGYI , s, 1979)
Keywords: (3GdJGQjN GdGSdGeis; (3GYdGe GdYQHs; (3GYdGe GdGSdGes