(3GdfeQ (B/ s - (3GdfGHdSj, gGdgs ((3HjQhJ (B:s (3OGQ GdeSjQI ddUMGag h GdWHGYg h GdfTQ,s, 1980)
Keywords: (3GdHHQjGJ (B( (3aUjdg(B)s; (3fGTFhf UZGQ (B(10 - 14 (3SfI (B)s