To find books in the Library use the OPAC (Online Public Access Catalog).

使用联机公共检索目录来寻找图书。

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Thee nucleus of any public library is the card catalog.

任何公共图书馆的核心都是卡片目录。

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That looks to be on the tentative mend, as the publisher and 3M have together cut deals with the Brooklyn Public Library and New York Public Library to bring Penguin's e-book catalog back as part of a test program.

ENGADGET: Penguin slinks back into e-book lending for New York City libraries, with a possible catch

Random House is the only major publisher to make e-books of its entire catalog available to any public library for unrestricted lending.

CNN: E-book lending: Your public library's best kept secret?