@article {Middleton:1972:0736-2935:267, title = "Propagation of machine generated sound within and around a process plant", journal = "INTER-NOISE and NOISE-CON Congress and Conference Proceedings", parent_itemid = "infobike://ince/incecp", publishercode ="ince", year = "1972", volume = "1972", number = "1", publication date ="1972-10-04T00:00:00", pages = "267-272", itemtype = "ARTICLE", issn = "0736-2935", url = "https://ince.publisher.ingentaconnect.com/content/ince/incecp/1972/00001972/00000001/art00048", keyword = "25, 53.1", author = "Middleton, A.H. and Seebold, J.G.", abstract = "", }