Ciekawe czy można się jakoś dokopać do pierwszej wersji?
Bo ta tutaj to już jakaś rozbudowana ;)
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Np. Tutaj
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https://www.businessballs.com/amusement-stress-relief/tree-swing-cartoon-pictures-early-versions/
Those 'original' drawings seem to have provided the basis for the version which appeared in John Oakland's book Total Quality Management, first published in 1989.
