How to extract text from a node but not from its children

I'm trying to parse this fragment with nokogiri from a page(so named a var) that contains

...
<dd>
    <a href="http://www.bo.es">Access </a>
    - 19/07/11
</dd>
...

page.at("dd").text shows me the whole text, not only dd's but also it's descendants text too. I mean

"Access - 19/07/11"
开发者_如何学运维

How can I extract only "- 19/07/11"?

(this is only an example)

Try page.xpath("//dd/text()").text