TY - GEN AU - Howard,P TI - Acute exacerbations and the fall of FEV 0.75 in chronic obstructive airways disease PY - 1969///0515 KW - Asthma KW - complications KW - Bronchitis KW - Chronic Disease KW - Female KW - Humans KW - Male KW - Middle Aged KW - Pulmonary Emphysema KW - Respiratory Insufficiency KW - etiology KW - Seasons KW - Smoking KW - Spirometry N1 - Publication Type: Journal Article ER -