Subject
Emigration and immigration.
2
Epidemiology.
2
System theory.
2
Animal migration.
1
Atmospheric science.
1
Building materials.
1
Computational complexity.
1
Developmental biology.
1
Dynamical systems.
1
Social sciences-Computer programs.
1
Social sciences-Data processing.
1
Statistical physics.
1
epidemiology
1
mass transfer
1
random process
1
spreading
1
system theory
1