Esko Valtaoja
Esko Valtaoja has written at least 7 books. Their most popular book is Kohti Ikuisuutta with 2 saves with an average rating of 4⭐.
They are best known for writing in the genres Space, Young Adult, and Exobiology.
Esko Valtaoja has written at least 7 books. Their most popular book is Kohti Ikuisuutta with 2 saves with an average rating of 4⭐.
They are best known for writing in the genres Space, Young Adult, and Exobiology.
 Kohti Ikuisuutta
| 4 |
 Tähtitiedettä kiireisille
| 3 |
 Tähtitiedettä kiireisille nuorille
| 0 |
 Tiedonjano - vuosi seikkailuja tieteen viidakoissa
| 4 |
 Avaruudesta Avaruudesta
| 4 |
 Kotona maailmankaikkeudessa
| 0 |
 Kaiken käsikirja
| 4 |