Jourdain, Robert
The hard disk companion
Brady Publishing, 1991
 Buku Teks
Wolverton, Van
Penuntun pengolahan hard disk
Erlangga, 1989
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Webber, Ross A.
To be a manager
Richard D. Irwin, 1981
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Dickens, Charles, 1812-1870
Hard times
Everyman`s Library, 1992
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Dickens, Charles, 1812-1870
Hard times
J.M. Dent & Sons, 1907
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