Power Girl : Aliens & Apes ( ISBN 978 - 1401229108 ) collects issues 7 through 12 .
Power Girl : Bomb Squad ( ISBN 978 - 1401231620 ) covers 13 to 18 , and Power Girl : Old Friends collecting issues 19 - 27 .
Power Girl : Aliens & Apes ( ISBN 978 - 1401229108 ) collects issues 7 through 12 , and Power Girl : Bomb Squad ( ISBN 978 - 1401231620 ) covers 13 to 18 , and Power Girl : Old Friends collecting issues 19 - 27 .