Classification
LTA - Biotechnology - reference books
15
AZZ - Firm index - general
14
LTE - Biotechnology - general aspects
7
LHL - Microbiology - general aspects
2
LTO - Biotechnology - application, industry
2
YPW - Economy of industry branches
2
AFW - Subject oriented organizations
1
AQMD - Bibliographies of online databases
1
LAA - Biology - reference books
1
LOL - Genetics - general aspects, classic genetics
1