Crossword clues for 6 x 9 in. book 6 letters:OCTAVOBook having 6" x 9" leavesOCTAVO6 x 9-inch book sizeOCTAVO6 x 9 in. bookOCTAVOBook size of 6 x 9 in.OCTAVOSBooks of size about 6 x 9 in.