Scope and Contents On the back cover and internet it is stated that Carla Bertola was born in 1935 in Torino, Italy where she lives. Since the early 60's she contributes to poetry magazines and poetry events. Produces Vispo since the 80's, edited on international magazines and some books in France, USA, Ireland, Italy. In the same period begins her performances of sound poetry. She had solo and collective exhibitions in many Countries: Visual Poetry, Installations, Artists Books. Her research in visual poetry has created different "Interferences in writing" in b/w and colour like those reproduced in this book. In 1978 she founded Offerta Speciale an International Magazine for Visual and Research Poetry. Carla says: "This book is another step showing my research called "Franges of interferences on writing" that started more then 10 years ago. At the beginning it was the writings in different shapes, interferring each other. That is, I cut and assembled over and over and finally made photocopies...