00409    a2200157   4500090001000000100002100010245004000031260000900071650001500080650002600095650002100121650002300142650002200165650004700187999001700234  c30971  aKalicharan, Noel  aAn introduction to computer studies  c1988  aData types  aProgramming languages  aComputer science  aSystem development  aOperating systems  aComputer applicationaComputer application  c57480d57480