(3GdSja hGdbde (B: s (3eNJGQGJ ef Gge GdebGdGJ GdYScQjI aj GdYGde (B/ s - (3gGQJ, GOQjGf djOds; (3gGQJ, HGRd djOds; (3fhQ GdOjf, YOfGfs ((3HjQhJ (B:s (3GdeDSSI GdYQHjI ddOQGSGJ hGdfTQ,s, 1982)
Keywords: (3GdMQHs; (3GdebGdGJs; (3GdeMGVQGJs; (3GdYdhe GdYScQjIs