Classification
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AQAA - Reference guides - general outlines
1
AQAB - Reference guides to online databases
1
AQB - Reference guides to science and technology
1
AQBD - Reference guides - physics
2
AQBE - Reference guides - chemistry
1
AQBH - Reference guides - medicine
1
AQD - Reference guides to social sciences
1
AQE - Reference guides to library and information science
1
AQMD - Bibliographies of online databases
1
AQPM - Bibliographies of translations
1
AQW - Biographic indexes with references
2
ASAA - Library reference works
1
ASAG - National library cooperation - Germany
1
ASCJ - Library catalog
1
ASCK - Library lending
1
ASEA - Book production, printing, paper, script
6
ASEB - Book trade
2
ATEA - Information storage and retrieval
1
AXA - Geographic surveys - specific countries
1
AXM - Guidebooks - Cities
1
AXN - Phrase books, language courses
56
AXN - Sprachführer, Sprachkurse
1
AXZ - Atlasses
1
AYA - Sciences - general aspects
2
AZZ - Firm index - general
20
C
4
CAA - Chemistry - reference books
150
CAC - Chemistry - nomenclature, classifications, abbreviations
4
CAD - Chemistry - comprehensive works
26
CAE - Chemistry - general
26
CAN - Chemistry - mathematical methods, computer applications
56
CANE - Chemistry - statistical methods
5
CAS - Chemistry - periodic system
5
CAU - Laboratory and safety engineering in chemistry
43
CAV - Chemicals, chemical reagents
29
CAX - Chemistry - information systems, literature guides
2
CBA - Gmelin handbook
486
CBB - Inorganic chemistry - comprehensive works
133
CBM - Inorganic synthesis and reactions of the elements and their compounds - general aspects
22
CBR - Inorganic synthesis and reactions of metals and their compounds
13
CBRE - Complex compounds
10
CBRH - Inorganic clusters
2
CBT - Inorganic synthesis and reactions of nonmetals and their compounds
9
CE - Organic chemistry
5
CEA - Beilstein handbook
353
CEB - Houben - Weyl handbook
174
CEC - Organic chemistry - comprehensive works
136
CEF - Organic chemistry - introductions
20
CEL - Organic synthesis and reactions - general aspects
32
CELC - Organic synthesis
81
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