Newton, R. G. (1969). Some further observations on the weathering crusts of ancient glass. Sheffield: Society of Glass Technology.
शिकागो स्टाइल उद्धरणNewton, Roy G. Some Further Observations On the Weathering Crusts of Ancient Glass. Sheffield: Society of Glass Technology, 1969.
एमएलए उद्धरणNewton, Roy G. Some Further Observations On the Weathering Crusts of Ancient Glass. Sheffield: Society of Glass Technology, 1969.
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