1638 1835 1527 1415 1859 1711 1231 1359 1177 1603 1925 1381 1914 1678 1919 1295 1571 1231 1494 1378 1890 1179 1152 1837 1752 1440 1771 1109 1538 1507 1941 1013 1932 1609 1892 1778 1076 1903 1496 1558 1177 1924 1819 1634 1820 1813 1944 1272 1072 1301 1869 1745 1035 1172 1386 1779 1729 1512 1735 1904 1286 1315 1544 1104 1469 1580 1484 1281 1973 1051 1184 1922 1532 1460 1580 1822 1081 1095 1725 1240 1606 1531 1145 1610 1266 1476 1493 1362 1832 1292 1186 1277 1251 1893 1572 1170 1954 1268 1513 http://library.phcsuphan.ac.th/search.usisassist.php?fromrefcode=&keyword=%20ทองแดงมีปัญหาในการเชื่อมต่อ/Connection Problems (open url)