*{{Literatur |Typ=wl |Autor=George Adams |Titel=Christ and the Earth: an introduction to a course of lectures given in London at the Rudolf Steiner Hall during autumn of 1927 |Hrsg= |Sammelwerk= |Band= |Nummer= |Auflage= |Verlag=Anthroposophical Society |Ort=London |Datum=1927 |Sprache=en |ISBN= |OCLC=801645407 |Seiten=}}Mathe | *{{Literatur |Typ=wl |Autor=George Adams |Titel=Christ and the Earth: an introduction to a course of lectures given in London at the Rudolf Steiner Hall during autumn of 1927 |Hrsg= |Sammelwerk= |Band= |Nummer= |Auflage= |Verlag=Anthroposophical Society |Ort=London |Datum=1927 |Sprache=en |ISBN= |OCLC=801645407 |Seiten=}}Mathe |