TY  - BOOK
TI  - GEMS/AIR Methodology review handbook series
PY  - 1994///
CY  - Nairobi
PB  - UNEP
KW  - Air pollution
KW  - Measurement
KW  - Urban pollution
N1  - Volume 1. Quality assurance in urban air quality monitoring - Volume 2. Primary standard calibration methods and network intercalibrations for air quality monitoring
ER  -