Manylion Awdur

Gordon Roberts

Cyflwyno'r Awdur

Gordon Roberts is an independent scholar; by profession an aircraft engineer, he is widely read in the sciences, technology, mathematics and engineering. He is a graduate of the Open University.

Cyhoeddiad(au) (Awdur)

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Manteisiwch ar 50% o ostyngiad ar nifer o'n llyfrau tan 29 Chwefror!