Book's editions (7)
I believe the answer is:
numbers
I believe this is a double definition.
'book's' is the first definition.
(I've seen this before)
'editions' is the second definition.
(Other definitions for numbers that I've seen before include "Book of Bible; counts" , "quantity" , "Fourth book of the Bible" , "Fourth OT book - figures" , "Amounts; songs, etc" .)