(3Cgd GdSfI hGdLeGYI (B:s (3eYGde GdGfWdGbI GdcHQi (B/s - (3GdeUQj, eMeO YHO GdgGOjs ((3GdQjGV (B:s (3OGQ WjHI ddfTQ hGdJhRjY,s, 1988)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3Cgd GdSfIs; (3GdaQb GdESdGejIs