On 28 Mar, 2012 By walter.macdonal...
A page in a scrapbook at National Office contains 8 Mars sketches and 8 dates/times/seeing ratings each on a piece of paper. Unfortunately, 7 of each of these have come unglued from the page. (There's a lesson in that somewhere!) So here is a challenge for all you sketchers and Mars observers out there: can you figure out which sketch goes with which date?
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