Classification
PKA - Elementary particles, nuclei - general
5
AFG - Large scale research institutions (Helmholtz Centres)
3
P
2
PKAE - Elementary particles, nuclei (reports)
2
PKG - Accelerators
2
PAM - Physics - miscellaneous topics
1
PKF - Elementary particles, nuclei - measuring methods and instruments
1
PKLF - Elementary particles - specific reactions, phenomenology
1