NLM Digital Collections

Search

Search Constraints

Start Over You searched for: Subjects Respiratory Tract Diseases -- epidemiology Remove constraint Subjects: Respiratory Tract Diseases -- epidemiology Publication Year 1949 Remove constraint Publication Year: <span class="single" data-blrl-single="1949">1949</span>

Search Results

1. Air pollution in Donora, Pa: epidemiology of the unusual smog episode of October 1948 : preliminary report