Published in the 1960s, the LBL Enciclopedia, a science paperback encyclopedia, shows these covers based on circles, image and type. Publish by Livros do Brasil. On the left: Men, Microbe and Malady, cover by Infante do Carmo, published in 1966. On the right: Von Bau und Werden des Organismus, cover by Karl Gröning Jr. and Gisela Pferdmenges. Publish date unknown.