pat_parson Posted January 21, 2020 Share Posted January 21, 2020 1 Link to comment Share on other sites More sharing options...
JDMvW Posted January 27, 2020 Share Posted January 27, 2020 Sines waves in spring This was a hard one, Pat 2 Link to comment Share on other sites More sharing options...
pat_parson Posted January 28, 2020 Author Share Posted January 28, 2020 You got the pun. Well done. Link to comment Share on other sites More sharing options...
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