Editorial Novaro books were published in up to four different sizes: standard (255 x 175 mm), Serie Avestruz "Ostrich series" (250 x 160 mm), Serie Aguila "Eagle series" (195 x 135 mm) & Serie Colibrí "Hummingbird series" (140 x 110 mm). Every title can have up any combination of the sizes (only one, two or three, or all four). The non-standard sizes always have it noted on the cover; usually the price logo will state which series size the book is, and either with the price or near the title/logo there will be an Ostrich, Eagle or Hummingbird, respectively.