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Author

Harry Challis

4 books found

Cover of Diesand moulds

Diesand moulds

Harry Challis · First published 1982

Cover of Grinding

Grinding

Harry Challis · First published 1982

Cover of Research in Noise and Vibration

Research in Noise and Vibration

Science Research Council (Great Britain) Staff, Harry Challis, Chris Stanton, Science Research Council Engineering Board Staff Great Britain · First published 1980

Placeholder cover for Track circuits (British practice)

Track circuits (British practice)

William Harry Challis · First published 1951