(3CUhd GdacQ GdGLJeGYi h eUGOQg (B/ s - (3ESeGYjd (B: (3bHGQi eMeOs ((3GdGScfOQjI (B: s (3OGQ GdcJH GdLGeYjI (B: s, 1971)
(3eL(B1 . (3Yde GdGLJeGY GdaQfSi s
(3jTJed Ydi GQLGYGJ HHdjhLQGajIs
(3GdecJHI JbJfi abW GdeLdO GdChds
Keywords: (3GdGLJeGY (B: (3Ydes; (3GdGLJeGY (B: (3Ydes -- (3JGQjN s; (3GdGLJeGY (B: (3Ydes -- (3aQfSGs