TY  - BOOK
AU  - Halpin, David M. G.
TI  - COPD: your questions answered 
SN  - 0443074380
PY  - 2003///
CY  - Edinburgh
PB  - Churchill Livinstone
KW  - Lung Disease, Obstructive
N1  - Includes bibliographical references(p 113 - 133) and index
ER  -