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In the late 19th and early 20th century Leo Baekeland and Alexander Parkes were involved in the development of what?

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In the late 19th and early 20th century Leo Baekeland and Alexander Parkes were involved in the development of what?
posted Jun 12, 2020 by Maninder Bath

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1 Answer

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The ans is -
Plastic

answer Jun 13, 2020 by Anuradha Tabyal
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