@inbook{NBERc4880,
 Crossref = "NBERfabr42-1",
 title = "Appendix B: Number of Persons in Manufacturing Industries",
 author = "Solomon Fabricant",
 BookTitle = "Employment in Manufacturing, 1899-1939: An Analysis of Its Relation to the Volume of Production",
 Publisher = "NBER",
 pages = "177-230",
 year = "1942",
 URL = "http://www.nber.org/chapters/c4880",
}
@book{NBERfabr42-1,
 title = "Employment in Manufacturing, 1899-1939: An Analysis of Its Relation to the Volume of Production",
 author = "Solomon Fabricant",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "NBER",
 year = "1942",
 URL = "http://www.nber.org/books/fabr42-1",
}