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11
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13Published 2011Available for University of the Philippine Diliman via Springerlink. Click here to access
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14Published 2011Available for University of the Philippine Diliman via Springerlink. Click here to access
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15Published 2007Available for University of the Philippines Diliman via Gale Virtual Reference Library. Click here to access
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16Published 2007Available for University of the Philippines System via Gale Virtual Reference Library. Click here to access
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19by Abenoja, Macrina K.Full text access requires UP Webmail login
Published 1997
Electronic Resource