(3HMKG Yf GdSYGOI (B: s (3GdGacGQ GdGLJeGYjI GdSjGSjI ai GdadSaI GdYQHjI GdGSdGejI (B/ s - (3GZfGJfch, GdcSfOQs ([S.N] : (3OGQ GdJbOe , s, 1990)
Keywords: (3GdadSaI GdGSdGejIs; (3GdJUha GdGSdGeis; (3GdadSaI GdjhfGfjIs; (3GdadGSaI GdeSdehfs