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Periodical Definition & Meaning - Merriam-Webster
PERIODICAL | English meaning - Cambridge Dictionary
PERIODICAL Definition & Meaning | Dictionary.com
PERIODICAL | definition in the Cambridge English Dictionary
Types of Periodicals - Introduction to Library Research
Periodical literature - Wikipedia
Periodical - Definition, Meaning & Synonyms | Vocabulary.com
periodical noun - Definition, pictures, pronunciation and usage …
Periodical - definition of periodical by The Free Dictionary
PERIODICAL definition and meaning | Collins English Dictionary