{"title":"Muscular tension as an index of visual efficiency; a progress report.","authors":"M E BITTERMAN, T A RYAN, C L COTTRELL","doi":"","DOIUrl":null,"url":null,"abstract":"","PeriodicalId":87629,"journal":{"name":"Illuminating engineering","volume":"43 9","pages":"1074-86"},"PeriodicalIF":0.0000,"publicationDate":"1948-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Illuminating engineering","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}