326.973 Bar A <a id="rdfa" resource="" property="dc:creator" href="http://viaf.org/viaf/4769992" target="_new">Barnes, Gilbert Hobbs</a> The antislavery impulse, 1830-1844. Gloucester, Mass., P. Smith, 1957. 298 p. 21 cm. (The American historial association) Incluye bibliografía