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| Photo Source |
Today I learned that a P-slip (a piece of paper with an approximate size of 3" x 5" commonly found in libraries) derives from being the same size as a former small-sized U.S. postal card, so P is short for "Postal".
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| Photo Source |
Today I learned that a P-slip (a piece of paper with an approximate size of 3" x 5" commonly found in libraries) derives from being the same size as a former small-sized U.S. postal card, so P is short for "Postal".
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