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Search works, persons, organizations and subjects:
Happonen, Heikki
URI:
http://urn.fi/URN:NBN:fi:bib:me:P00087364001
name
Happonen, Heikki
Authored works
Fyysisten erityisopetusympäristöjen historiallinen, typologinen ja arvioitu tila Suomessa
Works contributed to
Works about Happonen, Heikki
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