Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Working Group Report on the Structure of the Proton   We summarize the developments on the structure of the proton that were
studied at the Workshop on "HERA Physics" that was held in Durham in September
1995. We survey the latest structure function data; we overview the QCD
interpretations of the measurements of the structure functions and of final
state processes; we discuss charm production and the spin properties of the
proton.

31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg