(3ehGfY GdRhGL (B: s (3Hjf GdTQGFY GdSeGhjI GdKdGK h GdbhGfjf GdhVYjI (B/ s - (3Zfje, CMeOs ((3GdbGgQI (B: s (3OGQ GdfgVI GdYQHjI, s, 1970)
(3L (B1- (3GdfXQI GdYGeI ddRhGL L(B2- (3GdehGfY GdeDbJg ddRhGL L(B3 - (3GdehGfY GdeDjOg ddRhGLs
Keywords: (3GdESdGe(B. s; (3Gdabg(B. s; (3GdRhGL(B. s