<?xml version="1.0" encoding='utf-8'?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN" "http://www.wapforum.org/DTD/wml_1.1.xml">
<wml>
<card id="card1" title="Down quark - Page 6 - Wikipedia">
<p>
<a accesskey="1" href="page.php?w=down_quark&amp;p=5">1.Previous</a><br />
<a accesskey="3" href="page.php?w=down_quark&amp;p=7">3.Next</a>
</p>
<p>were thought to be <a href="page.php?w=elementary_particle">elementary particle</a>s. However, as new hadrons were discovered, the '<a href="page.php?w=particle_zoo">particle zoo</a>' grew from a few particles in the early 1930s and 1940s to several dozens of them in the 1950s. The relationships between each of them was unclear until 1961, when <a href="page.php?w=Murray_Gell-Mann">Murray Gell-Mann</a> Original:  and <a href="page.php?w=Yuval_Ne%27eman">Yuval Ne'eman</a>Original  (independently of each other) proposed a hadron classification</p><p>
<a accesskey="1" href="page.php?w=down_quark&amp;p=5">1.Previous</a><br />
<a accesskey="3" href="page.php?w=down_quark&amp;p=7">3.Next</a>
</p>

<do type="prev" label="Search">
        <go href="search.wml"/>
</do>

</card>
</wml>
