Between pulpit and pew [electronic resource] : the supernatural world in Mormon history and folklore / W. Paul Reeve and Michael Scott Van Wagenen, editors. (vendor record) (and others)
One of these last batches of vendor records had some very strange “ISBNs”. I was not checking check digits (though maybe I should), just bad patterns/lengths. Some of these even appear in 020ǂa, not 020ǂz.