In the 70s several gene banks for old varieties were created within scientific institutes Arboretum in Bolestraszyce southern Poland Institute of Orchards and Flowers in Skierniewice central Poland Botanical Garden of the Polish Academy of Science in Powsin near to Warsaw

Could you correct the punctuation please?
In the 70s several gene banks for old varieties were created within scientific institutes: Arboretum in Bolestraszyce (southern Poland); Institute of Orchards and Flowers in Skierniewice (central Poland); Botanical Garden of the Polish Academy of Science in Powsin (near to Warsaw).