Durack, Elizabeth
The Haw thorn press, 1977
Buku Teks
Durack, Elizabeth
Ure Smith , 1970
Buku Teks
The Haworth Information Press , 2004
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Durack, Mary, author
Thomas Nelson, 1964
Buku Teks
Boyett, Joseph H., author
American Management Association, 2008
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