Howard, P <br/><br/>
A long-term follow-up of respiratory symptoms and ventilatory function in a group of working men.  [electronic resource] 

 -  British journal of industrial medicine  Oct 1970 
 - 326-33 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0007-1072 
<br/><br/><label>Standard No.: </label>10.1136/oem.27.4.326  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Age Factors<br/>Air Pollution<br/>Airway Resistance<br/>Bronchitis--epidemiology<br/>Follow-Up Studies<br/>Humans<br/>Male<br/>Middle Aged<br/>Occupational Diseases--epidemiology<br/>Respiratory Tract Diseases--epidemiology<br/>Smoking<br/>Spirometry<br/>Sputum