1. The age of Pithecanthropus Author/Creator: Es, Louis Jean Chrétien van Publication/Creation: The Hague : M. Nijhoff, 1931 Resource Type: Book Access & Availability: Loading
2. Amazonia--landscape and species evolution : a look into the past Publication/Creation: Chichester, UK ; Hoboken, NJ : Wiley-Blackwell, 2010 Resource Type: Book Access & Availability: Loading