https://en.wikipedia.org/wiki/Portapak
Portapak - Wikipedia
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https://zkm.de/en/artworks/sony-av-3400-portapak
SONY AV-3400 Portapak | ZKM
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https://zkm.de/de/werk/sony-av-3420-portapak
SONY AV-3420 Portapak | ZKM
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