Final answer:
To check the availability of an article at the library, you would search in the library catalogue using keywords related to the article.
Step-by-step explanation:
To check the availability of an article at the library, you would search in the library catalogue. The library catalogue is a database that contains records of the materials available in the library, including books, articles, and other resources. By searching in the catalogue, you can find out if the article you are looking for is available and where it is located in the library. When searching in the catalogue, you can use keywords related to the article, such as the author's name or the title of the article. The catalogue will provide you with information on whether the article is in the library's collection, if it is available for checkout or reference, and its location in the library.