Thành viên:Trungvux
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<book category="winxp"> <title lang="en">windows xp</title> <author>trungvu</author> <year>2016</year> <price>30.00</price> </book> <book category="children"> <title lang="en">Harry Potter</title> <author>J K. Rowling</author> <year>2005</year> <price>29.99</price> </book> <book category="web"> <title lang="en">Learning XML</title> <author>Erik T. Ray</author> <year>2003</year> <price>39.95</price> </book>
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