Classification
PKA - Elementary particles, nuclei - general
110
PKAE - Elementary particles, nuclei (reports)
27
PKB - Elementary particles, nuclei - comprehensive works
24
PKC - Elementary particles, nuclei - general theory
23
PJA - Atomic physics - general
22
AFP - Research institutions - non-Europe
13
PKR - Nuclear reactions, nuclear scattering
12
AFG - Large scale research institutions (Helmholtz Centres)
11
AFW - Subject oriented organizations
10
EPK - Nuclear energy
10
PAD - Physics - comprehensive works
10
PKN - Nuclear structure
10
PAA - Physics - reference books
8
PKF - Elementary particles, nuclei - measuring methods and instruments
8
TNA - Nuclear engineering - general
8
PKG - Accelerators
7
PKL - Elementary particles - interactions, reactions, resonances
7
PLA - Astrosciences - general
7
PKAN - Elementary particles, nuclei - nuclear data collections
6
PKH - Neutron physics
6
CAA - Chemistry - reference books
5
AFM - Research institutions - Europe
4
AHZ - History of science and technology
4
AQTC - Publication lists of institutions - Germany
4
FAAB - Solid state physics - reference books
4
PAM - Physics - miscellaneous topics
4
PKKK - Symmetry and conservation laws
4
PKLB - Elementary particles - specific theories, interaction models
4
PKLF - Elementary particles - specific reactions, phenomenology
4
PKP - Radioactivity, electromagnetic transitions
4
AES - Universities, academies - Germany
3
AFC - Research institutions, scientific organizations - Germany ( DFG, MPG, FHG )
3
AFK - Research institutions - Germany
3
AQTS - Publication lists of institutions - Japan
3
FHN - Neutron scattering
3
PAE - Physics - general interest
3
PKFD - Radiation detectors
3
TNH - Research reactors
3
TNJ - Nuclear reactor technology
3
FAF - Materials research - comprehensive works
2
FAQ - Materials research - institutions, research and development
2
HBA - Medical physics
2
MNLB - Computational methods in physics
2
MSD - Mathematical methods in physics
2
PCA - Thermodynamics
2
PKK - Theory of fields and particles - general
2
PKLP - Properties of specific particles and resonances
2
PKRP - Heavy ion induced reactions and scattering
2
PKRR - Fission reactions
2
TNB - Nuclear power plants
2
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