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Hi,

During a SEO analysis i found that News generates duplicate content. For example:

Titel: "Baukejonkmans.nl | Avondvierdaagse en EHBO bij kleine wanddelletsels", double in 33 webpages:

/news/47/103/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/104/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/113/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/15/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/56/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/59/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/60/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/61/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/62/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/64/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/66/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/68/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/69/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/70/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/71/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/72/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/73/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/74/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/80/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/81/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/83/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/85/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/86/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/87/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/88/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/89/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/90/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/91/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/92/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/94/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/95/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/96/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html
/news/47/99/Avondvierdaagse-en-EHBO-bij-kleine-wanddelletsels.html

All the pages actually work. They do not forward to one page, but are all individually accessable.

I would like to get rid of those duplicates, but can't find an "opening" in the code where this problem could have come from. Do you have any ideas and

• - do you know how to get rid of the current duplicates and
  - how to avoid duplicates to be made in the future?

Thank you very much for your help!

Search the forum for canonical url and set a default detailpage.

Note that you can not prevent that content from appearing in all those urls! There are other ways too. That should not be a problem SEO wise.

It's about letting those search engines know what url they should index. That's where those canonical urls are for.