Introduction -- P.1 An approach for appropriate technologists -- P.2 The social context for choosing water technologies -- P.3 Tools for agriculture -- P.4 Intermediate technology building -- P.5 Energy in rural areas -- P.6 Pedal power -- P.7 Intermediate chemical technology -- P.8 Education system -- P.9 Appropriate production systems -- P.10 Industrial liaison -- P.11 Some social criteria for appropriate technology -- P.12 The transfer of knowledge and the adoption of technology.