Schlachtflieger - same year. two different authors??

[Bombphoon]

According to Amazon, on 28th June 2007, as part of their Flying Colours series, Midland Publishing published a 96-page book called 'Schlachtflieger - Luftwaffe Ground-Attack Units 1937-1945 by Smith, Goss, Pegg, Arthy, Beale et al'.

However, also according to Amazon, on exactly the same date, also as part of their Flying Colours series, Midland Publishing ALSO published a 96-page book called 'Schlachtflieger - Luftwaffe Ground-Attack Units 1937-1945 but by Christian-Jacques Ehrengardt.

Both titles are available on ebay etc.

Did Midland Publishing really publish the same title by two different authors and if so, are the books different or the same content?