Aitchison, Jean, Alan Gomersall, Ralph Ireland, and Patricia Day, eds. Thesaurofacet: A Thesaurus and Faceted Classification for Engineering and Related Subjects. Whetstone, England: English Electric Co., 1969.

Aitchison, Jean, Alan Gomersall, Ralph Ireland, and Patricia Day, eds. Thesaurofacet: A Thesaurus and Faceted Classification for Engineering and Related Subjects. Whetstone, England: English Electric Co., 1969.