Firth, Sophia. The urbanization of Sophia Firth [[Book] /] Sophia Firth. - Toronto : P. Martin Associates, 1974. - 271 p. ; 24 cm. ISBN: 0887780822 Nat. Bib. Agency Control No.: 740079972 Subjects--Personal Names: Firth, Sophia.Firth, Sophia. Dewey Class. No.: 301.360924 National Library of Medicine Call No.: / FU