Classification
CBA - Gmelin handbook
486
CEA - Beilstein handbook
353
PAD - Physics - comprehensive works
302
CEB - Houben - Weyl handbook
174
CAA - Chemistry - reference books
127
PDA - Mechanics - general
126
DNC - Internet
122
PBA - Quantum theory
122
CEC - Organic chemistry - comprehensive works
117
CBB - Inorganic chemistry - comprehensive works
113
DOQ - Programming languages - Internet
99
FAJ - Solid state physics - introductions
99
PKA - Elementary particles, nuclei - general
99
PCA - Thermodynamics
95
DOZ - Programming languages - Other
86
MWH - Statistics
85
PEG - Optics
85
DMC - Computer programs
83
AHK - Scientific work
80
TEA - Electrical engineering - general
79
CELC - Organic synthesis
78
DMA - Programming
77
DOFC - Programming language - C plus-plus
77
DNA - Computer networks, local area networks
74
FMB - Physical metallurgy - general aspects
71
YPB - Economy - general aspects
71
CTA - Chemical analysis - comprehensive works
70
DOE - Programming language - BASIC, Turbo BASIC, Visual BASIC
70
MSD - Mathematical methods in physics
68
THC - Engineering mechanics and dynamics
67
MIAB - Infinitesimal calculus, foundations and textbooks
65
DUA - Text and document processing
64
FAO - Materials science - introductions
64
HDS - Neurophysiology, neuroanatomy
63
HDG - Psychology, psychiatry
62
THQ - Fluid mechanics and dynamics
62
DKAI - Unix - operating system
61
DSA - Computer graphics, image/photo editing
60
HBH - Anatomy and cytology of man
60
ACE - Germanic languages, Indo-Germanic languages
59
PEA - Electromagnetism
59
YPD - Business economics
59
DWAC - Relational database systems
58
LEM - Botany - anatomy, morphology
58
LKD - Biochemistry - comprehensive works
57
PCB - Statistical physics
57
CHA - Physical chemistry - comprehensive works
55
PJA - Atomic physics - general
55
PEJ - Laser physics, laser materials
54
DKAL - Linux - operating system
53
more ...