ISBN Check Digit

Famous quotes containing the words check and/or digit:

“If he had been sent to check out Bluebeard’s castle, he would have come back with a glowing report about the admirable condition of the cutlery.”
—Mary McGrory (b. 1918)

“Bless my soul, Sir, will you Britons not credit that an American can be a gentleman, & have read the Waverly Novels, tho every digit may have been in the tar-bucket?”
—Herman Melville (1819–1891)