People Switzerland Erwin Frei peoplepill id: erwin-freiEF 13 views today 16 views this weekSwiss agronomistErwin FreiBiographyListsAlso ViewedSimilar peoplePeople also viewedErnst JaggiGeorg PopowHans WengerSwiss agronomistErnst PeyerSwiss agronomistFrom our partnersSponsoredErwin Frei