00686cam a2200253 i 4500 2153388 BD-DhUL 20161214153619.0 710318s1971 enka p 00000 eng d B7106250 0273314564 paperback 2153388 VSL BD-DhUL BD-DhUL 651.5 FIL Learning Systems, ltd. Filing and indexing / Learning Systems. London : Pitman, 1971. viii,152p : illus ; 15x21cm. A Pitman programmed text Filing systems. Pitman programmed texts. ddc BK ANL 651.53 L438 135320 135320 0 0 ddc 0 651_500000000000000_FIL 0 NFIC 253929 DUL DUL GEN 2016-12-14 Gift 651.5 FIL A99975 2016-12-14 2016-12-14 BK