Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Calibration of Star-Formation Rate Measurements Across the
  Electromagnetic Spectrum   This is one chapter of the summary paper of the IAU Special Session SpS8
"Calibration of star-formation rate measurements across the electromagnetic
spectrum", Beijing, China, August 2012.

30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th