(3JGQjN HGHd (B/ s - (3QhJf, eGQZQjJs; (3ejTGd GHi aGVds; (3RjfI YGRGQ s ((3HjQhJ(B: s (3efThQGJ YhjOGf , s, 1975)
Keywords: (3JGQjNs; (3HGHds; (3GdHGHdjhfs; (3MVGQI GdYQGb GdbOjeIs; (3GdYQGb GdbOje (B- (3JGQjNs