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Welcome to OCLC! If you are looking for information or materials from a library, visit WorldCat.org to search for resources in a library near you and thousands of libraries around the world.

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¡Bienvenido a OCLC! Si busca información o materiales de una biblioteca, visite WorldCat.org para encontrar recursos en una biblioteca de su zona y en miles de bibliotecas de todo el mundo.

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¡Bienvenido a OCLC! Si busca información o materiales de una biblioteca, visite WorldCat.org para encontrar recursos en una biblioteca de su zona y en miles de bibliotecas de todo el mundo.

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Willkommen bei OCLC! Wenn Sie Informationen oder Materialien von einer Bibliothek benötigen, können Sie auf WorldCat.org nach Medien in einer Bibliothek in Ihrer Nähe sowie in Tausenden Bibliotheken in aller Welt suchen.

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Willkommen bei OCLC! Wenn Sie Informationen oder Materialien von einer Bibliothek benötigen, können Sie auf WorldCat.org nach Medien in einer Bibliothek in Ihrer Nähe sowie in Tausenden Bibliotheken in aller Welt suchen.

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许可

DDC 系统已有超过 135 年的历史，因此，很容易让人以为 Dewey 这一名称早已存在于公共领域中。然而，并非如此，直至 1988 年，OCLC 联机计算机图书馆中心 (OCLC Online Computer Library Center) 才拥有 Dewey 名称的商标权。

如果您对将 Dewey 名称或分类号用于合法商业用途的许可感兴趣，请首先联系 busdev@oclc.org。我们制订了在保护 OCLC 商标权的前提下，允许其他机构使用 Dewey 名称的许可协议。

杜威十进分类法 (DDC) 系统是全世界使用范围最广的图书馆馆藏整理方法。DDC 会持续进行更新，从而使相关主题在所有语言中都能更容易地被人们发现。由于 DDC 的使用十分方便，因此您可以快速高效地增加资料的可见性。

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通过杜威博客可获取与分类问题相关的新闻和评论，以及有趣且不寻常的 DDC 资源和奇闻。此外，其也是直接与 DDC 编辑分享反馈的便捷方法，以帮助塑造 DDC 的未来。

杜威十进分类法系统的所有版权均归 OCLC, Inc. 所有。Dewey、杜威十进分类法、OCLC 和 WebDewey 均为 OCLC, Inc. 的注册商标。