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• Ana Delgado_Application for work in process of polyworkertion_Etching_15 x15 _2012.jpg
• Modernizatin process of the system 21 2x 5 3_Etching 2012.jpg
• Ana Delgado_Cybernetic recruitment machinery to emply unemployed_Etching 21 x 14 7_2012.jpg
• Ana Delgado_The civil Machinery 10 x 12.5_etching 2012.jpg
• Ana Delgado_View of Hong kong 100 years ago.jpg