کتاب های Guga]
Os Hermanos e nós
Ariel Palacios & Guga Chacra [Palacios, Ariel & Chacra, Guga], 2014
Organophosphorus chemistry. Volume 45
David W Allen, David W Allen, David Loakes, John C. Tebby, Mariette M Pereira, Gyorgy Keglevich, Maurizio Selva, Piotr Guga, A Bodzioch, Gerd-Volker Roeschenthaler, V Chandrasekhar, Robert Slinn, Goutam Brahmachari, 2016
