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1 Jan 1970 Jahr - Cheaper solar panels made

Beschreibung:

100$ a watt to 20$ a watt.
Dr. Elliot Berman.

Zugefügt zum Band der Zeit:

Kacie and Rachel

30 Okt 2017

1

0

812

Datum:

1 Jan 1970 Jahr

Jetzt

~ 55 years ago

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