A Chinese Biogas Manual

Ariane van Buren, Michael Crook

Leo Pyle

The production of biogas, which is regarded in many countries as a by-product of an efficient system of energy production, has become in China a comprehensive, controlled method of waste disposal, recycling resources, supplying energy and fertilizer and improving rural health, as the digesting of wa...

A Manual on the Hydraulic Ram for Pumping Water

Simon Watt

Part One contains details of how to make and maintain a small hydraulic ram on a suitable site, whilst Part Two takes a more technical look at ram performances and design considerations and also contains a useful bibliography.

A Manual of Building Construction

H.K. Dancy

This is a practical, illustrated handbook on the construction of small buildings using local materials, suitable for a great variety of ground and climatic conditions. Devised originally for amateur builders, it is based on the author's direct experience, working in the tropics, and is a practical a...