Roberto Sbrana has written:
'Diseconomie esterne e produzione industriale' -- subject(s): Waste disposal, Environmental aspects, Tanneries, Recycling (Waste, etc.)
Leone Sbrana has written: 'Amici delfini' -- subject- s -: Dolphins, Fiction 'Il premio' -- subject- s -: Correspondence, reminiscences, Italian Authors
Roberto Poloni has written: 'Roberto Poloni'
Roberto Barni has written: 'Roberto Barni'
Roberto Crippa has written: 'Crippa'
Roberto Estrada has written: 'Trenco'
Roberto Viola has written: 'Singularidad'
Roberto Carumati has written: 'Geologia'
Roberto Imperiale has written: 'Oremus'
Roberto Fallani has written: 'Roberto Fallani' -- subject- s -: Exhibitions
Roberto Piva has written: 'Piazzas' 'Quizumba'
Roberto Barocci has written: 'Maremma avvelenata'
Roberto Armijo has written: 'Francisco Gavidia'