Assertion: yeti's book | /r/HasProperty | his 1990 collaboration
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text: A non-Discworld book, Good Omens, his 1990 collaboration with Neil Gaiman, has been a longtime bestseller and was reissued in hardcover by William Morrow in early 2006 (it is also available as a mass market paperback - Harper Torch, 2006 - and trade paperback - Harper Paperbacks, 2006).