To subscribe to this calendar and have it appear in your own Google Calendars, follow the following steps:
1. Click on the +Google Calendar button on the bottom right of this calendar
2. A new tab will open; it will take you to your Google Calendar (if you aren't signed in you will need to sign in first)
3. It will ask you if you want to add this calendar to your calendars - choose "yes"
4. It will appear in your calendars list under "other calendar