Classification
LHH - Microbiology - methods
96
LHL - Microbiology - general aspects
64
URA - Soil chemistry
60
HBM - Medical microbiology, infectious diseases
40
LCR - Ecology of microorganisms - land and water
39
LWH - Agriculture - soil sciences
36
GNA - Geology - soil sciences
35
LCN - Ecology - soil sciences
35
LHD - Microbiology - comprehensive works
25
LHA - Microbiology - reference books, culture collections
24
LHY - Bacteria - physiology
21
LCNA - Soil microbiology
20
LTN - Biotechnology - biodegradation
17
LHM - Microbiology - genetics
14
LTH - Biotechnology - methods
14
LOH - Genetics - methods
11
LRH - Cytology - methods
11
LKH - Biochemistry - methods
10
LHW - Bacteria - general aspects
9
LVE - Food science - general
9
LVN - Food science - chemistry, analytics
9
GPA - Geobiology - general
8
USNG - Waste water treatment - biological aspects
8
LHN - Fungi - general aspects
7
LON - Molecular genetics
7
LTU - Genetic engineering
7
LVH - Food science - technologies
7
LWE - Agriculture - general aspects
7
UPCE - Water chemistry
7
UPN - Water protection, water quality, clean water
7
LAA - Biology - reference books
6
GPAC - Aquatic biology - geographical aspects
5
LCH - Ecology - methods
5
LCL - Biotopes, ecosystems
5
LHX - Bacteria - morphology, systematics
5
LTD - Biotechnology - comprehensive works
5
UHN - Landscape ecology
5
HKE - Special pathology, pathophysiology
4
LAD - Biology - comprehensive works
4
LCP - Limnology
4
LWV - Agriculture - plant protection
4
UCE - Environmental impact, environmental pollution
4
UPC - Water - general aspects
4
UVM - Environmental aspects of hydrocarbons - incl. oil
4
HJE - Immunology - experimental
3
HPK - Special pharmacology, drug design
3
LAN - Biology - mathematical methods, statistics
3
LCO - Hydrobiology
3
LEL - Botany - lower plants
3
LLH - Protein chemistry - methods
3
more ...