TY  - BOOK
ED  - United States.
TI  - Prevalence of selected chronic respiratory condition: U. S. 1970 
U1  -  616.2 
PY  - 1973///
CY  - Washington, D.C.
PB  - The Department
KW  - Respiratory organs
KW  - Diseases
N1  - Data from national health survey
ER  -