(3fXQjI GdGOH (B/ s - (3hjdjc , QjfjIs; (3hGQjf , GhSJfs; (3MSGe GdNWjH(B((3eQGLY(B)s; (3eMiGdOjf UHMis ([S.N] : (3GdeLdS GdGYdi dQYGjI Gdafhf hGdGOGH hGdYdhe GdGLJeGYjI , s, 1972)
Keywords: (3GdGOHs; (3GdGOH (B- (3JGQjN hfbOs; (3GdGOH GdebGQfs