“Small-scale, Rural Biogas Programmes”, published in 2015, is an update on the information provided in “Running a Biogas Programme”, published in 1988. It uses the information resources on which the previous book is based, plus many other sources that bring it up-to-date. As a handbook, it offers details analyses of the largest domestic biogas programmes, which include those in China (over 40 million units installed), India (over 4 million units installed), Nepal (over ¼ million units installed) and the rest of Asia (over ¼ million units installed). The Nepal programme is seen as the most successful, as there are more biogas plants installed per head of population than anywhere else in the world and, for a time, they were able to demonstrate a success rate of over 95% (plants still being used 5 years after they were installed). The book considers the aspects of such programmes that are effective and also those aspects that have proved less effective. These include biogas plant designs (Chapter 6 and 7), as well as the management of these programmes (Chapter 9, 10 and 11). The book includes 47 diagrams. The designs described, the floating drum and the fixed dome  (concrete and brick systems) are those that have been made in large numbers across the world. Chapter 3 includes details of the benefits of a biogas plant to the users, details of which were gained from talking to the users themselves. Chapter 5 considers the value of the compost generated from the anaerobic process, especially if the effluent is further processed.   Chapter 12 covers the philosophy of biogas extension, considering the idea of the triple (or even quadruple) bottom line. Each chapter includes a long list (512) of references, both popular and academic. References are taken from research and extension review projects over the history of the various programmes, from 1970s to the present. It is based on a wide range of information sources.