/usr/lib/libedata-book-1.2.so is in libedata-book1.2-dev 3.12.9~git20141128.5242b0-2+deb8u3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libedata-book-1.2.so.20.0.0
/usr/lib/libedata-book-1.2.so.20.0.0