00321nam a22001337i 4500001001000000005001700010008004100027082001600068245003500084260002100119300001700140650001200157020001800169SXC01049620260819093505.0260101s1900    ii            000 0 eng d  a0 .M-C022210aChallenge And Response /cs.n.  abMissing,c1900  ap. ;c22 cm. 0aMissing  a9780901977007