1336 1978 1168 1020 1294 1682 1355 1430 1016 1256 1384 1706 1066 1846 1794 1591 1854 1463 1143 1999 1471 1910 1869 1427 1936 1116 1959 1821 1320 1519 1192 1245 1679 1066 1192 1259 1746 1489 1508 1500 1599 1762 1439 1581 1249 1875 1209 1486 1828 1710 1617 1683 1137 1978 1086 1088 1094 1241 1433 1294 1923 1122 1287 1020 1161 1135 1699 1141 1989 1480 1596 1760 1418 1224 1824 1533 1687 1879 1264 1089 1628 1203 1042 1162 1462 1105 1211 1749 1866 1481 1492 1435 1670 1153 1212 1359 1467 1167 1907 http://library.bcnpb.ac.th/ulib6search.usisassist.php?fromrefcode=&keyword=%20Ralph%20C.%20Bensonมีปัญหาในการเชื่อมต่อ/Connection Problems (open url)