Nuffield Foundation & Scottish Education Department. (1973). Metals stages 1 and 2: A unit for teachers. Published for the Schools Council by MacDonald Educational.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNuffield Foundation और Scottish Education Department. Metals Stages 1 and 2: A Unit for Teachers. London: Published for the Schools Council by MacDonald Educational, 1973.
एमएलए (9वां संस्करण) प्रशस्ति पत्रNuffield Foundation और Scottish Education Department. Metals Stages 1 and 2: A Unit for Teachers. Published for the Schools Council by MacDonald Educational, 1973.
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