特殊字符未显示在text / html对象中

I am trying to display content from a website with a text/html object like this :

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="de" lang="de">
<head>
<meta charset="UTF-8">
</head> 

<object type="text/html" width="735" height="1000"
    data="http://www.meteo.physik.uni-muenchen.de/dokuwiki/phpincludes/publicationstest.php?abteilung=alle&rev=ja&ajahr=2006&mim=ja">
  <p>you should have seen my other page here, but something broke.</p>
</object>

However, special characters are not displayed correctly. I can see, but not edit, the php script creating the output on the server side:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<html>

<head>
<meta name="GENERATOR" content="Microsoft FrontPage 4.0"; charset=charset=ISO-8859-1>
<title>Publikationen</title>

</head>

<body>
<?php
if ($query['rev'] == "alle") {$OK = true;};
...
?>
</p>
</body>
</html>

Is it possible to get correctly display special characters?

A flagrant mojibake exemplar.

The original data come from next procedure

go to (home) page http://www.meteo.physik.uni-muenchen.de/
click Forschung (= Research) in the main horizontal menu;
click Publikationen am MIM (= Publications) on right.

All data are UTF-8 encoded there, see also explicit HTML meta attribute charset=utf-8 there.

However, those data occur in an embedded HTML document bogusly and seemingly attributed charset=ISO-8859-1 following next scenario (invalid HTML markup code):

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="de" lang="de">
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    ...
  </head>
  <body>
    ...
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
    <html>
      <head>
        <meta name="GENERATOR" content="Microsoft FrontPage 4.0"; charset=charset=ISO-8859-1>
        <title>Publikationen</title>
      </head>
      <body>
        ...
        ...       UTF-8 encoded data bogusly attributed `charset=ISO-8859-1`
        ...
      </body>
    </html>
    ...
  </body>
</html>

On the other hand, you are displaying partial content (that embedded HTML document) extracted from the original website. Unfortunately, in its content are some UTF-8 characters (see e.g. sample data in your comment) misinterpreted as follows:

char  encoding     code        name
ü     UTF-8        0xC3 0xBC   LATIN SMALL LETTER U WITH DIAERESIS
Ã     ISO-8859-1   0xC3        latin capital letter a with tilde
¼     ISO-8859-1        0xBC   vulgar fraction one quarter

ä     UTF-8        0xC3 0xA4   LATIN SMALL LETTER A WITH DIAERESIS
Ã     ISO-8859-1   0xC3        latin capital letter a with tilde
¤     ISO-8859-1        0xA4   currency sign

due to charset=UTF-8 encoded data are charset=ISO-8859-1 interpreted.