V R Hrehorovich, W D Schrack, D A Hall, R E Longenecker, I F Gratch. Show Affiliations »
Abstract
Mesh： See more » AbsenteeismDisease OutbreaksHumansInfluenza, Human/epidemiologyOccupational MedicineOrthomyxoviridae/isolation & purificationPennsylvaniaPopulation SurveillancePublic Health AdministrationSchool Health Services
Year: 1970 PMID： 4987475 PMCID： PMC2031681
Source DB: PubMed Journal: Public Health Rep ISSN： 0094-6214 Impact factor: 2.792