People Pierre Willien peoplepill id: pierre-willienPW 7 views today 7 views this weekPierre WillienBiographyListsAlso ViewedListsPierre Willien is in following listsBy field of workNotable biologistsGender:MaleBy work and/or countryNotable ZoologistsGender:MaleNotable EntomologistsGender:MaleFrom our partnersSponsoredPierre Willien