@incollection{:/content/books/9789210451567s004-c018, author = "United Nations", title = "Tubes, pipes and hoses, and fittings therefor, of plastics", booktitle = "Industrial Commodity Statistics Pocketbook 2018", publisher = "United Nations", year = "2018", pages = "32-32", url = "https://www.un-ilibrary.org/content/books/9789210451567s004-c018" }