Answer: octavos

AnswerCrossword Clue
OCTAVOS

Book sizes

OCTAVOS

Books in which each sheet of paper is folded into eight leaves

OCTAVOS

Book sizes.

OCTAVOS
Books having 8mo pages.
OCTAVOS
Page sizes for books
OCTAVOSBook signatures
OCTAVOSSome sheet music paper sizes
OCTAVOSBooks of size about 6 x 9 in.
OCTAVOS6x9-inch books
OCTAVOSBooks with a 6x9-inch size