OXLADE CHRIS. (2019). MAKING MACHINES WITH WHEELS AND AXLES (2014 Ed.). RAINTREE PUBLISHERS.
Dyfyniad Arddull ChicagoOXLADE CHRIS. MAKING MACHINES WITH WHEELS AND AXLES. 2014 Ed. CHICAGO: RAINTREE PUBLISHERS, 2019.
Dyfyniad MLAOXLADE CHRIS. MAKING MACHINES WITH WHEELS AND AXLES. 2014 Ed. RAINTREE PUBLISHERS, 2019.
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