(3GKHGJ YPGH GdbHQ (B: s (3JMbjb(B/(3O(B.(3TQa eMehO GdbVGI (B/ s ((3YeGf(B/(3GdGQOf (B: s (3OGQ GdaQbGf ddfTQ , s, 1983)
Keywords: (3GdYbjOI hGdGjeGfs