Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Strangelets in Cosmic Rays   The properties of strangelets are reviewed and two experiments searching for
them in cosmic rays are described. The prospects for strangelets as ultra-high
energy cosmic rays beyond the classical GZK-cutoff are discussed.

20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph