"Quarto" . "4\u00BA" . . . "quarto" . . . "in quarto" . "quarto-sized" . "4to" . "''cuarto''" . . "halfsheet" . "quartos" . . "Quarto" . "royal quarto" . "quarto volumes" . "quarto-size" . . . . . . "in-4\u00B0" . "4\u00B0" . . . .