The ISBN of Gene Wolfe's Book of Days is 978-0-385-15991-3.
The ISBN of Malgudi Days - book - is 8185986177.
The ISBN of A Thousand Days - book - is 0-618-21927-7.
The ISBN of The Book of Dead Days is 0-385-74704-7.
The ISBN of Five Days in Paris is 0385315309.
The ISBN of The Unselfish Gene is 978-1934041697.
The ISBN of The Gene Wars universe is 0-06-105260-4.
The ISBN of The Final Days is 0671894404.
The ISBN of This Book Is Broken is 9780887847967.
The ISBN of The Book of est is 0030173868.
The ISBN of Book of Rhymes is 0465003478.
The ISBN of Babel - book - is 9780399121029.
The ISBN of Outliers - book - is 9780316017923.