Units 13,15,16,17,18,19,22,23,27 answers :http://www.mediafire.com/?n96k6f9jq6r08h0
unit 14 answer : http://www.mediafire.com/?pffe74cs31xee6p
unit 14 answer : http://www.mediafire.com/?pffe74cs31xee6p
# This is the OFFICIAL SITE for computer science students in el shrouk academy , df3t 2015 isa :D