Science fiction book covers in the 1960s and 1970s were often wild and psychedelic — but these Norwegian book covers, from the science fiction imprint Lanterne, are astounding. Designed by Peter Haars, they are like a wild drug frenzy in book-cover form.

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These covers were posted on Flickr by user Gojira2012, and then found their way onto Caustic Cover Critic. Check out some of our favorites below, and more at the link. [Flickr, via Caustic Cover Critic and Flavorwire]