A publication issued regularly, such as a journal or magazine.

A time interval; a length of time characterized by particular events or conditions.

एक समय अंतराल; विशेष घटनाओं या स्थितियों द्वारा विशेषीकृत अवधि।

English Usage: The periodicals of history often reflect the social changes of their time.

Hindi Usage: इतिहास की पत्रिकाएँ अक्सर अपने समय में सामाजिक परिवर्तनों को दर्शाती हैं।

A list of the books and articles that have been used or referred to in a piece of writing.

A description or analysis of a scholarly work.

एक विद्वान कार्य का विवरण या विश्लेषण।

English Usage: The bibliography included summaries of each work discussed in the class.

Hindi Usage: भूमिका सूची में कक्षा में चर्चा किए गए प्रत्येक काम का सारांश शामिल था।