(3GdJaGVd h GdJcGed (B/s (3GdLRA GdJGfj(B.s - (3SjQ ghQjK dGes; (3Rcj eQSj eMeOs; (3fGOQ GdfGHdSjs; (3QGLj Mdje ebGQs; (3aDGO eMeO QLHs; (3eMeO eQSj CMeOs ((3GdbGgQI (B:s (3GdeLdS GdGYdi ddYdhe(B,s, 1960)
. 567-557 (3HHdjhLQGajG(B: (3UaMGJ(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdeGdjI GdYGeI hGdJTQjY GdVQjHjs; (3GdJaGVd hGdJcGeds; (3GdQjGVjGJs; (3Ydhe GdMGSHs; (3GdQjGVGJ GdHMJIs; (3MGSHGJs