Complex sentence: OMango d'Press, 1970s Englehardt and his book proved to be a source of inspiration for his contemporary Arnold Ehret, an important pioneer of Vitalism, who mentions Engelhardt in "The Mucusless Diet Healing System", continuously in print for over 90 years.
Split into simpler sentences: OMango d'Press, 1970s Englehardt and his book proved to be a source of inspiration for his contemporary Arnold Ehret, an important pioneer of Vitalism. Ehret mentions Engelhardt in his famous book "Mucusless Diet Healing System" which has been continuously in print for over 90 years.