Surfing the web, I have found usefull link for those who would like to restrict access to a webpage for visitors of a certain country. Here’s a sample for your config file:

<Limit GET HEAD POST>
order allow,deny
deny from 85.94.160.0/19
deny from 91.187.64.0/19
deny from 194.117.123.178/32
deny from 194.158.64.0/19
deny from 195.112.181.196/32
deny from 195.112.181.247/32
allow from all
</LIMIT>

Database for ip addresses can be found here: http://www.find-ip-address.org/