Não informado. Soviet plastics. Rubber and Plastics Research Association of Great Britain.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Soviet Plastics. London: Rubber and Plastics Research Association of Great Britain.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Soviet Plastics. Rubber and Plastics Research Association of Great Britain.
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