Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Introduction to the Workshop "30 years of bubble chamber physics"   After some recollections of the early bubble chamber times, a brief overview
of the golden age of the field is made, including its legacy and the use of
bubble chamber events for the popularization of science.

17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat