What has the author Karl Bartz written?

Karlheinz Bartels (1933–1999), a German physician, wrote:

- “Die Krankheit Tod” (“The Disease Death”, 1981)

- “Die Heilkraft der Seele” (“The Healing Power of the Soul”, 1984)

- “Die Antwort der Seele” (“The Answer of the Soul”, 1989)