(3cfhR Gdedc SdjeGfs - (3gLQO(B. (3GdSjQ QGjOQs; (3GdNWjH(B. (3Sja GdOjf(B-(3eJQLes ((3OGQ GdTeGd ddWHGYI hGdfTQs (3WQGHdS dHfGfs, 1982)
Keywords: (3bUUs; (3bUU YGdejI eJQLeIs