Classic problems of probability / Prakash Gorroochurn. (OCLC #757478610).
Mr. Sunday’s Saturday night chicken / Lorraine Wallace. (OCLC #774024192)
The first title was already in our collection; the second was in a DDA record pool and detected as a possible duplicate because their records share an ISBN!
The chicken book does have the ISBN in an 020ǂz (Cancelled/Invalid ISBN) but we are checking those as well because they often contain the ISBNs of the title from other ebook publishers or in other formats.
This particular ISBN (9781118063255) is a popular one; OCLC has it in records for eight distinct titles!