(3JMaI GdYQhS, Ch, GdRhGL GdESdGej GdSYjO (B/s - (3GdESJGfHhdj, eMehO egOj,s 1909-2000 ((3HjQhJ ;s (3OeTb (B:s (3OGQ YeQ Hf GdNWGH ddfTQ h GdJhRjY,s, 1981)
Keywords: (3GdRhGLs; (3GdESdGe hGdEUdGM GdGLJeGYjs