Validation of the fields in the product catalog (positive price, non-blank title and description).
确认产品目录中的字段(正数价格，非空的标题和描述)。
After you gather a list of citations from a periodical index, check to see if your library owns that magazine or journal by searching for the title of the periodical in the library catalog.
当你从期刊索引上收集了一系列的引用时，从图书馆目录上通过搜索期刊刊名检查你的图书馆是否拥有该杂志或期刊。
From the catalog, we see that is has a title of Project Areas, which can be used as a label for a selection list.
从目录中，我们看到了它有一点的ProjectAreas，可以用作选择列表的标签。
B: Yes I am. You can check our online catalog to search the book you want based on the genre, title or if you know the author, I can point you towards the right direction.
我可以帮你找找。你可以按照类型，书名或者是你知道的作者，通过在线目录来查找，我可以告诉你在哪里。
Have you checked in the catalog under author and title?
你查过作者和书名目录了吗？
So every book in the catalog has a title card.
这么说，目录柜中每本书都有一张书名卡。
You can check our online catalog to search the book you want based on the genre, title or if you know the author, I can point you towards the right direction.
你可以按照类型，书名或者是你知道的作者，通过在线目录来查找，我可以告诉你在哪里。
This title is was listed on the Preview page of a 1991/1992 ECM catalog with PolyGram number 849 648-1/2 (LP/CD) but it does not appear in later catalogs or on the ECM web site.
本专辑的艺人和专辑名称在1991/1992版供预览使用的ECM唱片目录上出现，当时的宝丽金发行号码是“849 648-1/2 （LP/CD）”。但是后来正式目录上抹掉这张唱片，ECM网站也并没有列出它的信息。
This title is was listed on the Preview page of a 1991/1992 ECM catalog with PolyGram number 849 648-1/2 (LP/CD) but it does not appear in later catalogs or on the ECM web site.
本专辑的艺人和专辑名称在1991/1992版供预览使用的ECM唱片目录上出现，当时的宝丽金发行号码是“849 648-1/2 （LP/CD）”。但是后来正式目录上抹掉这张唱片，ECM网站也并没有列出它的信息。
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