Question: What is an ISSN, ISBN, DOI or PMID?
Answer
Books, Journals, and digital resources are given unique numbers that can be used to identify them and make finding them easier.
E-resources/digital resources
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DOI (Digital Object Identifier) or a PMID (PubMed Identifier) is a unique number that has been assigned to a digital object, such as an article, book chapter, or data set.
If you have the DOI or PMID for something, it can help you get directly to the content.
Journals
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ISSN stands for International Standard Serial Number. ISSN's have eight digits, and each is unique to a journal publication.
Books
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ISBN stands for International Standard Book Number. ISBN's have 10 or 13 digits, and each is unique to a book publication.
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