Bibliographie der Radioaktiven Stoffe (Large Text Classic Reprint) Lucas Richard Heftet / 2018 / Tysk
Religious Perfection: Or a Third Part of the Enquiry After Happiness (Classic Reprint) Lucas Richard Innbundet / 2018 / Engelsk
Religious Perfection, or a Third Part of the Enquiry After Happiness (Classic Reprint) Lucas Richard Innbundet / 2018 / Engelsk
Stability of Happiness Theories and Evidence on Whether Happiness Can Change Lucas Richard E. Heftet / 2016 / Engelsk