Question

What Indexing is a Periodical a?<BR>Ufak TC RT Indexing Periodical &
a. Quarter<BR&gt fast
ob. Weekly<BR&gtalcat
Half yearly<BR&gt Ath
od. Monthly<BR&gtart​

Answer 1

Answer:

A periodical index is a subject, author and keyword index to a selected list of periodicals; it's the key to finding articles on a particular topic. If the index also summarizes the contents of an article, it is called an abstract.

Explanation:

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