what were the released date for marvel graphic novel collection?
27 dec 2013, 15 jan 2014, 29 jan 2014, 12 feb 2014, 26 feb 2014, 12 mar 2014, 26 mar 2014, 9 apr 2014, 23 apr 2014, 7 may 2014, 21 may 2014, 4 june 2014, 18 june 2014, 2 july 2014, 16 july 2014
which was released in 2013?
the avengers