List of best mirrors for IP address 18.119.139.235, located in an unknown country.
I am very sorry, but no mirror was found. Feel free to download directly:
http://mirrordirector-mb.raspbian.org/raspbian/pool/main/libw/libwnckmm/libwnckmm-1.0-0-dev_0.1.1-3+b1_armhf.deb