[Solved] What is the name of this font type?

Transylvania Asks: What is the name of this font type?
I like the font used in this paper, but don’t know its name.

https://www.nber.org/system/files/working_papers/w25136/w25136.pdf

Can someone tell me (1) what is the name of the main font used in the paper, and (2) what is the name of the math font?

Thanks so much.

Cheers

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