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1 gen 1970 anni - Cheaper solar panels made

Descrizione:

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

Aggiunto al nastro di tempo:

Kacie and Rachel

30 ott 2017

1

0

812

Data:

1 gen 1970 anni

Adesso

~ 55 years ago

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