TY  - BOOK
ED  - United States
TI  - Air quality criteria for particulate matter
T2  - Its Publication
AV  - TD 881 .U56
U1  - 628/.53/2 
PY  - 1969///
CY  - Washington
KW  - Air quality
KW  - Standards
KW  - Local
N1  - Includes bibliographies
ER  -