S?ugethiere (Mammalia)

The organization of trilobites, deduced from their living affinities; with a systematic review of the species hitherto described.

The Organization of Trilobites: Deduced from Their Living Affinities, with Systematic Review of the Species Hitherto Described (Classic Reprint)

El Campo del Cielo (Territorio del Chaco): Extracto de Un Informe Presentado...

Grundiss Der Naturgeschichte: Fur Gymnasien Und Hohere Burgerschulen (Classic Reprint)

Description Physique de la R?publique Argentine d'Apr?s Des Observations Personelles Et ?trang?res, Vol. 5: L?pidopt?res; Premi?re Partie, Contenant Les Diurnes, Cr?pusculaires Et Bombyco?des Avec Un Atlas de XXIV Planches In-4e

Systematische Ubersicht Der Tiere Brasiliens

El Campo del Cielo (Territorio del Chaco): Extracto de Un Informe Presentado...

The Organization of Trilobites: Deduced from Their Living Affinities, with Systematic Review of the Species Hitherto Described (Classic Reprint)

Beitr?ge zur n?heren Kenntniss der Gattung Tarsius.