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Amgueddfa Cymru – Museum Wales
Questionnaire and cover letter attached with a paperclip. Questionnaire (2 copies) on stove practice circulated by the British Iron & Steel Federation Technical Department. Typed in black ink on cream paper. Cover letter is from the British Iron & Steel Federation Iron & Steel Industrial Research council regarding the questionnaire. Typed in black ink on headed paper. Dated 21st January, 1935.
