Classification
P - Physics ( journals )
499
P
26
A - General
1
C - Chemistry
1
D - Computer sciences
1
E - Energy
1
F - Materials research
1
G - Geosciences
1
H - Medicine
1
L - Life sciences
1
M - Mathematics
1
P - Physics
1
P - Physik ( journals )
1
T - Engineering sciences
1
U - Environment
1
Y - Law, economy, social affairs
1
Z - Library sciences
1