Classification
UMB - Atmospheric chemistry
5
UMN - Air pollution control and measurement
4
LWV - Agriculture - plant protection
3
CUM - Laser spectroscopy
2
UMD - Atmospheric models
2
UMG - Technology of clean air
2
UMLE - Air pollution by power plants and industrial plants
2
UMNC - Air pollution control by chemical analytical methods
2
UMNG - Air pollution by solid pollutants - incl. smog
2
UMR - Effects of air pollution
2
UMRC - Effects of air pollution on plants and animals
2
UMT - Acid rain and atmospheric deposition
2
CUUP - ESR spectroscopy, hyperfine interaction
1
GXAA - Polar research - arctic region
1
HYE - Environmental health
1
LENS - Plant physiology - stress factors
1
LWH - Agriculture - soil sciences
1
LWW - Agriculture - transfer factors, radioagronomy
1
UAN - Environment - mathematical methods, computer applications
1
UCS - Environmental chemistry
1
UENH - Cost factors of air pollution and control
1
UHK - Traffic and environment - incl. automobile exhaust gas
1
UMK - Air pollution - general aspects
1
UML - Air pollution by special sources
1
UMNE - Air pollution by gaseous pollutants
1
UMNL - Environmental aerosols
1
UMRB - Effects of air pollution on man
1
YEA - Environmental law
1