References Detail back created at: 2010-02-12 Media Type: Article in Journal Authors Valde-Nowak, Pawel / Nadachowski, Adam / Wolsan, Mieczyslaw Year: 1987 Title: Upper Palaeolithic boomerang made of a mammoth tusk in south Poland Volume: 329 Page No: 436-438 JournalNature Keywords Time Period Upper Palaeolithic European timeline Palaeolithic Super Region Europe Class of Artefact weapon Assemblage Type cave Material antler, ivory / teeth, shell Miscellaneous worked bone Taxon – wild animals Cervidae, Proboscidea, Mollusca Further Information Location: Knochenarbeit back