TY  - BOOK
AU  - Williams,Bryan
TI  - AQA GCSE (9-1) Design and technology : electrical and mechanical systems and components
SN  - 9781510401105
U1  - 621.3076 
PY  - 2017///
CY  - London
PB  - Hodder Education
KW  - Electrical engineering--Examinations
KW  - Mechanical engineering--Examinations
N1  - Includes index
ER  -