Titles of the 4-volumes of the Eco-Technology Series:
Schauberger, Viktor & Coats, Callum: Eco-Technology 1: The Water Wizard - The Extraordinary Properties of Natural Water (1998, Gateway Books, ISBN 9781858600482)
Schauberger, Viktor & Coats, Callum: Eco-Technology 2: Nature as Teacher - New Principles in the Working of Nature (1999, Gateway Books, ISBN 9781858600567)
Schauberger, Viktor & Coats, Callum: Eco-Technology 3: The Fertile Earth - Nature's Energies in Agriculture, Soil Fertilisation and Forestry (1999, Gateway Books, ISBN 9781858600604)
Schauberger, Viktor & Coats, Callum: Eco-Technology 4: The Energy Evolution - Harnessing Free Energy from Nature (2000, Gateway Books, ISBN 9781858600611)
[Callum Coats is translator & editor]