Brown, James Duff, 1862-1914. Manual of library economy. - 7th ed. / - London : Grafton , 1961. - xii, 307 p. : port. ill. ; 23 cm. Bibliography: p. 242 - 256. Subjects--Topical Terms: Library Science Libraries -- Great Britain National Library of Medicine Call No.: Z 670 / B813m 1961