(3ehLR JGQjN MRH GdYeGd GdajjJfGej (B/s - (3dLfI ecdaI HOQGSI JGQjN MRH GdYeGd GdajJfGejs ([(3Ohf ecGf(B] :s [(3Ohf fGTQ(B] (3,s, 1973)
Keywords: (3GdMRH GdTjhYj s; (3MRH GdYeGd GdajJfGej s