Classification
CBA - Gmelin handbook
486
PAD - Physics - comprehensive works
356
CEA - Beilstein handbook
353
CEB - Houben - Weyl handbook
174
DNC - Internet
169
TEA - Electrical engineering - general
169
DOQ - Programming languages - Internet
163
PDA - Mechanics - general
153
CAA - Chemistry - reference books
150
DKAE - Windows
147
PBA - Quantum theory
139
THA - Mechanical engineering - general
137
CEC - Organic chemistry - comprehensive works
136
DOZ - Programming languages - Other
135
CBB - Inorganic chemistry - comprehensive works
133
DMC - Computer programs
132
DNA - Computer networks, local area networks
132
DMA - Programming
120
MWH - Statistics
120
DSA - Computer graphics, image/photo editing
119
FAJ - Solid state physics - introductions
119
PKA - Elementary particles, nuclei - general
117
DOFC - Programming language - C plus-plus
115
DUA - Text and document processing
115
DKAI - Unix - operating system
114
THE - Computer aided design and engineering (CAD)
113
DKAL - Linux - operating system
111
AMA - Education - general
106
YPG - Business management
106
PCA - Thermodynamics
105
DOL - Programming language - Python
104
PEG - Optics
101
TBC - Electronic circuits
101
LKH - Biochemistry - methods
98
DOE - Programming language - BASIC, Turbo BASIC, Visual BASIC
97
THD - Design and construction in mechanical engineering
97
YPD - Business economics
96
AHK - Scientific work
95
DWAC - Relational database systems
94
YPB - Economy - general aspects
94
MIAB - Infinitesimal calculus, foundations and textbooks
92
TIE - Process engineering
92
HDG - Psychology, psychiatry
91
THC - Engineering mechanics and dynamics
90
CTA - Chemical analysis - comprehensive works
89
FAO - Materials science - introductions
85
ACE - Germanic languages, Indo-Germanic languages
83
LMN - Molecular biophysics, biophysical chemistry
83
HCR - Imaging techniques in medicine
82
HDS - Neurophysiology, neuroanatomy
82
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