TY  - BOOK
ED  - National Tuberculosis and Respiratory Disease Association.
TI  - Chronic obstructive pulmonary disease: a manual for physicians
U1  - 616.23 
PY  - 1972///
CY  - New York, NY.
PB  - NTRDA
KW  - Pulmones
KW  - Enfermedades
ER  -