Google Calendar lets you export either a feed of all of your events (private and public) or just your public events to the iCalendar format.
You can get the URL for this feed by following Google's documentation: Getting your calendar's Private address.
Make sure you copy the URL from the green "ICAL" button in the Private Address section
If you only want to import the public events from your Google calendar into localendar, then you use a different URL from Google. Directions are on this Google page: Find your calendar's address under the header Get the Calendar Address for your public calendar.
Make sure you copy the URL from the green "ICAL" button in the Calendar Address section
You can import this feed into localendar by following the directions on the Importing iCalendar into your localendar page