People Luxembourg Guy Colling peoplepill id: guy-collingGC 9 views today 9 views this weekGuy CollingBiographyListsAlso ViewedSimilar peoplePeople also viewedTom BattinLuxembourgish biologistPaul DiederichLichenologist and mycologistCarlo BackPhysicien et homme politique luxembourgeoisThierry HelmingerFrom our partnersSponsoredGuy Colling