(3GYjGf GdbQf GdKGdK YTQ ai GdacQ hGdSjGSI hGdGLJeGY (B/ s - (3eQOe, Ndjd s; (3eQOe, YOfGf s ((3HjQhJ (B:s (3dLfI GdJQGK GdYQHi,s, 1971)
Keywords: (3GdQLGds -- (3JQGLes -- (3GdbQf GdKGdK YTQs; (3YdeGA GdGLJeGYs -- (3JQGLes