(3JbQjQ Yf GdJfejI aj GdYGde (B1992:s (3GdJfejI hGdHjFI eDTQGJ GdJfejI GdOhdjI (B/s - (3GdHfc GdOhdjs ((3GdbGgQI(B:s (3eQcR GdGgQGe ddJQLeI GdYdejI(B,s, 1992)
(3eQGLY HHdjhLQGjaI UaMI (B349-352s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdGbJUGO GdOhdjs; (3HjFIs; (3eGdjI YGeIs; (3JfejI OhdjIs; (3GdVQGFHs; (3GdGbJUGO GdYGdejs