Patio book / Sunset
Lane Books , 1952
 Buku Teks SO
Mize, Joe H.
Essentials of simulation
Prentice-Hall, 1968
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Bodie, Zvi
Essentials of investments
Irwin McGraw-Hill , 1998
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Messenger, William E.
Essentials of writing
Prentice-Hall, 1989
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Koontz, Harold
Essentials of management
McGraw-Hill, 1974
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