Date of birth	1897
Date of death	1966
Occupation	professori
Field of Activity	kasvatustiede
Other Forms of Name	Haavio, Martti Henrik (1897-1966) Haavio, Martti (1897-1966)
Identifiers	0000000025771320 (isni) http://urn.fi/URN:NBN:fi:au:finaf:000042875 (finaf)