People Theo van Alen peoplepill id: theo-van-alenTVA 8 views today 8 views this weekTheo van AlenBiographyListsAlso ViewedThe basicsQuick FactsisZoologist MalacologistWork fieldBiologyGenderMaleListsTheo van Alen is in following listsBy field of workNotable biologistsGender:MaleBy work and/or countryNotable ZoologistsGender:MaleNotable MalacologistsGender:Male comments so far.CommentsTheo van Alen