Ryhmätyöaiheet Jaa Sulje https://docs.google.com/presentation/d/1TQql9bfUKowNPO4OmWcuOs6W0ezfIfJyTKPEan-n-kE/edit#slide=id.g19d8f72a7c_1_5
https://docs.google.com/presentation/d/1TQql9bfUKowNPO4OmWcuOs6W0ezfIfJyTKPEan-n-kE/edit#slide=id.g19d8f72a7c_1_5
