00612nam a2200193   4500001001400000003000700014005001700021020001500038040000800053245008200061260005400143300003100197500001900228504004000247650006000287650002600347700001900373700002600392vtls000003137KUKTEM20251117142026.0  a1591405912  aUMP00aE-learning and virtual science centers /ceditors, Leo Tan and R. Subramaniam  aSingapore:bInformation Science Publishing,c2005  axiv 457 p.:bill.;c26 cm.  aIncludes index  aIncludes bibliographical references00aSciencexStudy and teachingxComputer network resources00aInternet in education12aTan, Leo 1944-12aSubramaniam, R. 1952-