【雅思聽力】圖書館系統(tǒng)介紹(3/4)

In many university libraries, they use their own Biblitas cataloging system or the Micro-fiche system. Both of them list publications under author and title and both are very easy to use. Now, let us see the reference books. We all know that references books make up important part of a library's nonfiction books collection. They contain facts and information about any subject you can think of. Reference books are not meant to be read from cover to cover. You should use them when you want important facts and information about a particular subject. Let's see some major types of reference books. First dictionaries. Dictionaries are books that list and give the meaning of the words in a language. They also give the pronunciation of words in a dictionary which is listed alphabetically. Second is encyclopedias. Encyclopedias are reference books that provide factual information about people, events, places and subjects of lasting interest. Each article is written by a specialist on the topic being discussed. An encyclopedia usually consists of a number of books arranged in a set. The volumes are arranged in alphabetical order according to the topic of each article.