Timo Penttilä
![Planning Helsinki City Theatre in 1964: from the left, Jukka Siivola, [[Pekka Salminen]] and Timo Penttilä](https://upload.wikimedia.org/wikipedia/commons/3/32/Timo-Penttila-1964.jpg)
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20by Hökkä, Hannu, Penttilä, Timo, Hånell, BjörnGet access
Published in Canadian Journal of Forest Research (1996)
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Article in Journal/Newspaper