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The original cover design was based on the "Manitoba Tartan" with the consent of the copyright holder. |
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The cover was redesigned in 1981, when the publisher decided to have a uniform appearance for all its journals. |
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The redesign of 2007 reflected the publisher's desire to have individual appearances for its hundreds of journals. The cover design was based on Grätzer's book on finite congruence lattices. |
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