1.There are three types of card catalogue. Classified catalogue, author catalogue, and title catalogue. Use the classified catalogue when you do not know the author or the title of a book, or when you want to search about a specific subject thoroughly.
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Answer:
1.There are three types of card catalogue. Classified catalogue, author catalogue, and title catalogue. Use the classified catalogue when you do not know the author or the title of a book, or when you want to search about a specific subject thoroughly.
Explanation: