http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
önkéntesség kapcsolata a mentális egészséggel és a kapunyitási pánikkal
The relationship between volunteering, mental health and quarter-life crisis
Psychology, special (including therapy for learning, speech, hearing, visual and other physical and mental disabilities)