Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comment on ``Air bubbles in water: A strongly multiple scattering medium
  for acoustic waves" [Phys. Rev. Lett. 84, 6050, 2000]   We comment on a recent Letter in Phys. Rev. Lett. (M. Kafesaki, R. S. Penciu,
and E. N. Economou, Phys. Rev. Lett. {\bf 84}, 6050 (2000))

6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
4
The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn