1971 1326 1519 1722 1727 1916 1241 1661 1845 1014 1636 1114 1626 1083 1792 1368 1621 1732 1208 1585 1401 1740 1343 1499 1277 1794 1821 1731 1105 1677 1136 1660 1740 1897 1846 1885 1983 1890 1024 1513 1904 1214 1216 1171 1760 1218 1893 1653 1269 1581 1032 1362 1088 1340 1641 1415 1160 1268 1575 1698 1287 1230 1795 1813 1434 1179 1858 1481 1794 1060 1675 1979 1104 1211 1687 1013 1826 1154 1128 1685 1360 1027 1406 1164 1329 1634 1700 1839 1860 1484 1961 1521 1742 1407 1642 1432 1957 1220 1969 http://library.phcsuphan.ac.th/search.usisassist.php?fromrefcode=&keyword=%20เศรษฐกิจมีปัญหาในการเชื่อมต่อ/Connection Problems (open url)