(3GdGNhGf GdeSdehf h GdeDGeQI Ydi ShQjG (B/ s - (3QRb (B: (3LGOs ([(3GdbGgQI(B] : s (3OGQ GdGYJUGe (B: s, 1980)
(3jTJed Ydi GQLGYGJ HHdjhLQGajIs
Keywords: (3GdGNhGf GdeSdehfs; (3GdGSdGe h GdSjGSIs -- (3ShQjGs; (3GdGSdGes -- (3OYhGJ SdajIs -- (3ShQjGs