An Odd Line in the Veresov

I was looking at some Veresov lines in my MCO book.  I have the 13th edition by Walter Korn, published in 1990.  Anyhow, that might explain what is given as the first and main line in this book: 1.d4, d5 2.Nc3, Nf6 3.Bg5, Nbd7 4.f3, h6 5.Bh4, e6 6.e4, g5 7.Bg3, Nxe4.

Black plays 7...Nxe4.  The computer says its just losing for Black after 8.fxe4.  Someone must have analyzed this gambit, right? Have you ever seen it?  What was also strange is that in the book line White re-takes with the Knight.  Now I can't see any reason for this.  Does anyone know for a fact that is a book error?  Maybe it is.  There are no analysis notes discussing this question in the book.

It's a typo 4f3, should be 4Nf3

Yes that makes sense.  Thank you.

given the position , it was likely nf3 as mentioned above,BUT moves like qd3 and f3 are also ways to play the veserov (whereas bf4 is instead the jobava attack)

I thought that one was by Nick de Firmian.