Oboe Sonata, TWV 41:a3 (Telemann, Georg Philipp) is from issues ("lessons") 17 and 18 of Der getreue Musikmeister, not issues 7 and 8 as the work page states.
This can be verified by looking at a complete copy of the collection, which has its own work page.
Telemann Oboe Sonata TWV 41:a3 source reference is inaccurate.
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