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31Published 2007Available for University of the Philippines Baguio via Gale Virtual Reference Library. Click here to access
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35by Ohmer, SusanAvailable for University of the Philippines System via Gale Virtual Reference Library. Click here to access
Published 2006
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38Published 2002Available for University of the Philippines System via Gale Virtual Reference Library. Click here to access
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40by Rainbow, Edward L.
Published 1987Book