(3GdWad Hjf GdJQHjI GdCSQjI hGdeOQSI (B/s - (3aQL, YHO GddWja MSjf,s 1373 (3gLQjG(B-s ((3ecI GdecQeI (B:s (3eQcR GdHMhK GdJQHhjI GdfaSjI,s, 1991)
Keywords: (3JQHjI GdCWaGds; (3GdeOQSI hGdeLJeYs; (3Yde GdGLJeGY GdJQHhjs; (3JYdje eG bHd GdeOQSIs