F G Machan. Show Affiliations »
Abstract
Mesh: See more » AbsenteeismGermany, EastHumansOccupational MedicineOptics and PhotonicsPhysical FitnessRegistries/standards
Year: 1975 PMID: 1220307
Source DB: PubMed Journal: Z Arztl Fortbild (Jena) ISSN: 0044-2178