I Think that i dont know
the author card is the list where the author or the person who write that is found in title card ...... the subject card is the main idea or the title of the book .......... the title card is the list all book by its title.............
author card title card subject card
what is the difference author card and title card and subject card
Title Card
The appropriate way to display a PhD title on a business card is to write your full name followed by "PhD" or "Dr." before your name. For example, "John Smith, PhD" or "Dr. Jane Doe."
A title cardis a card that lists an item within a library collection according to it's title. The title card also lists the author, publication information, and subject(s) associated with the item.
author card, title card, subject card
Author card title card and subject card
for the cards there are author subject and title
author card, title card, subject card
A PAN card is a card that identifies someone's permanent account number in India. To write a letter to request a new one, simply date the letter and title it "To Whom It May Concern," then ask for a new card since yours was lost or stolen and sign your name on it with your PAN number and address.
Title cards are prepared for works with a distinctive title. If a work is anonymous, there must naturally be a title card. Main Card Catalog. The Main Card Catalog, located adjacent to the Main Reading Room on the first floor of the Jefferson Building, contains subject.