Valtaoja Esko
Esko Jorma Johannes Valtaoja is a Finnish professional astronomer and writer. Valtaoja works as a professor at the University of Turku where he studies quasars.
Books
Esko Jorma Johannes Valtaoja is a Finnish professional astronomer and writer. Valtaoja works as a professor at the University of Turku where he studies quasars.