![no cover found](https://literarybibliography.eu/themes/default/images/no_cover.png)
by:
Iisalo, Viljo.
In: Valmet. - ISSN 0784-7203. - Helsinki : Valmet. - (1957) : 4, s. 14-15, 21
Journal article
In: Valmet. - ISSN 0784-7203. - Helsinki : Valmet. - (1957) : 4, s. 14-15, 21
Journal article