(3OQGSGJ ai GdJfejI (B:s (3HQfGeL GdHMhK GdeTJQc dLGeYI GdbGgQI heYgO eGSGJThSJS ddJNWjW GdJcfhdhLj (B/s ((3GdbGgQI (B:s (3eQcR HMhK GdJfejI hGdJNWjW GdJcfhdhLj,s, 1980)
Keywords: (3GdJfejI GdGbJUGOjIs