Most recent

  • Pan American Union; International Sanitary Conference of the American Republics, 4 San Jose (Washington, D.C, US: Pan American Union,, 1910)
  • Actas 
    Unión Panamericana; Conferencia Sanitaria Internacional de las Repúblicas Americanas, 4 San José (Washington, D.C, US: Unión Panamericana,, 1910)