Gas Natural Group

This stunningly beautiful book on the UNESCO World Heritage Sites in Mexico does not seem to have a title page!
It is not missing (as far as I can tell). It is expensively produced with beatiful binding, silk page marker. It is not in WorldCat and I cannot find it in the National Library of Mexico. It could very well be a "gift edition" from the Gas Natural Group - the prefaces (here called Prologues) are from the Chief Executive Officer and the Chairman of the Board, both pictured in color..
The authors are all famous in their fields and have each published many works (listed under author biographies); the photographs are superb.… (plus d'informations)