- Libro electrónicoArgentine Ornithology, Volume II (of 2) A descriptive catalogue of the birds of the Argentine Republic.W. H. (William Henry) Hudson
- Libro electrónicoArgentine Ornithology, Volume II (of 2) A descriptive catalogue of the birds of the Argentine Republic.W. H. (William Henry) Hudson
- Libro electrónicoArgentine Ornithology, Volume I (of 2) A descriptive catalogue of the birds of the Argentine Republic.W. H. (William Henry) Hudson