Match-Similar-No Match

Match-SImilar-No Match
(How do you know?)
 

Match:
     Same ISBN
     Same author & title
     Same publisher and/or distributor
     Same date (on verso of title page)
     Same language
     Same format (book, sound recording, DVD, etc.)

Similar:
     Same author & title
     Same format (book, sound record, DVD, etc.)
     NO OTHER MATCHES

No Match:
     Different format (even if same author and title)
     Different ISBN
     Different language
     Same author but different title
     Same title but different author