Bash : Full Circle Magazine Downloader

#!/bin/bash
echo -n "No. pertama edisi Majalah yang ingin Anda download? "
read firstissue

echo ""
echo -n "No. terakhir edisi yang ingin Anda download? ( > atau = No. pertama ) "
read lastissue

for a in `seq $firstissue $lastissue`
    do
        wget -U Mozilla "http://dl.fullcirclemagazine.org/issue"$a"_en.pdf"
    done

echo ""
echo "Selesai!"