how the find mariska from holland-zwanenburg?

Answer 1

Zwanenburg has more than 7000 people, and the name Mariska is not really rare, so it is likely that there are a few women and girls with the name.

If you know her family name you can try the telephone directory:
http://www.detelefoongids.nl/
Enter in the green field, the family name in the bar with 'wie' and the address, (only town if that is all you know) in the bar with 'waar'.
Zoek = search.

7000 people is still small enough that you can try to phone someone with the same name and ask for Mariska, often in towns this site people with the same family name do know the first names of the others.

If you have met Mariska, but do not know her family name, you can try to phone just someone in town and try again till you have the right person.
(Best ask for the name of someone that is the same age group as Mariska, so the chances of finding someone who knows her get bigger.)
But the town is a little large for that.

Good luck.