(3GdeONd Gdi YdGL GdeTcdGJ GdGLJeGYjI GdaQOjI (B((3NOeI GdaQO(B) / s - (3eMeO SdGeI eMeO YHGQis ([S.N] : (3GdecJH GdLGeYi GdMOjK , s, 1981)
Keywords: (3NOeI GdaQOs; (3GdNOeI GdGLJeGYjIs; (3GdGQTGO GdGLJeGYis