(3GdaJM GdhgHj Ydi eTcdGJ GdeJfHjs - (3Hf Lfj,GHj GdaJM YKeGfs ((3HZOGO(B:s (3OGQ GdTDhf GdKbGajI GdYGeI,s, 1990)
Keywords: (3GdTYQ GdYQHjs -- (3GdYUQ GdYHGSjs