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2Argitaratua 2004Available for University of the Philippines System via Science Direct. Also available remotely thru Open Athens:
Electronic Resource -
3Argitaratua 2001Available remotely for University of the Philippines System via Science Direct. Click here to access through Open Athens
Electronic Resource -
4Argitaratua 2001Available remotely for University of the Philippines System via Science Direct. Click here to access through Open Athens
Electronic Resource