pb?Paperback. Typically 7" by 4.25" (18 cm by 11 cm) or smaller, though trimming errors can cause them to sometimes be slightly (less than 1/4 extra inch) taller or wider/deeper.
Notes: Price as seen on back cover scan is in Portuguese escudos, written as 20$.
Catch a Falling Star (the 1968 expansion of The 100th Millennium) in Portuguese. Translated by Lopes de Azevedo.
The cover reprints Paul Lehr's for the Crest edition of Nine Tomorrows by Isaac Asimov.