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The Penguin Companion to Literature

p 321 JSTOR Google Books Google Books Google Books Google Books The Penguin Companion to Literature, in snippet view, from Google Books: vol 2,

google-penguin-google-panda-and-google-algorithms-2013Google Penguin, Google Panda, and Google Algorithms 2013
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Bill Hartzer provides a historical view of the Google algorithms most in use today, including Google Panda, Google Penguin, and Google Hummingbird. Learn about these algorithm and filters, and how to recover from Google Penguin and Google Panda if your website was penalized.