1044
1783
1444
1939
1929
1185
1112
1669
1257
1892
1329
1418
1399
1455
1949
1270
1823
1429
1384
1819
1602
1830
1828
1089
1941
1268
1121
1670
1031
1190
1028
1973
1514
1118
1770
1210
1941
1086
1539
1853
1157
1750
1808
1799
1546
1819
1450
1425
1193
1862
1480
1335
1113
1189
1598
1131
1163
1032
1301
1810
1821
1421
1419
1234
1390
1575
1169
1291
1331
1935
1522
1683
1948
1655
1548
1095
1092
1640
1363
1124
1972
1624
1609
1422
1394
1869
1422
1601
1268
1618
1720
1185
1230
1324
1700
1347
1147
1812
1886
http://library.phcsuphan.ac.th/search.usisassist.php?fromrefcode=&keyword=%20Student-centered%20learningมีปัญหาในการเชื่อมต่อ/Connection Problems (open url)