00500     2200169   4500001002100000008004100021035002000062245004800082100002100130260004200151300005100193084001600244520002200260082001200282650001600294990002000310INLIS000000000008787                                   Ind    a0010-1118008787  aError detecting decimal codescVERHOEFF, J.  aJacobus Verhoeff  aAmsterdambMathematisch Centrumc1969  a118 p. : ill. ; 25 cm.c118 p. : ill. ; 25 cm.  a511.135VERe  aBibl.: p. 112-118  a511.135  aMATHEMATICS  a134/71-mfn10566