Books by Carl Marius Hansen:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Hansen, Carl Marius, 1878-: Rules, requirements and universal safety standards of the Department of accident prevention, inspection and merit classification, Workmen's compensation bureau ... General standards recommended by the Committee of safety engineers, approved by the Rating and classification committee. ([New York], 1914), also by New York Workmen's compensation service bureau (page images at HathiTrust)- Hansen, Carl Marius, 1878-: Universal safety standards; a reference book of rules, drawings, tables, formulae, data suggestions for use of architects, engineers, superintendents, foremen, inspectors, mechanics and students (Universal Safety Standards Pub. Co., 1914), also by National Workmen's Compensation Service Bureau (page images at HathiTrust)
Find more by Carl Marius Hansen at your library, or elsewhere.