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11Foilsithe / Cruthaithe 2005Available for University of the Philippines System via Science Direct. Also available remotely thru Open Athens:
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13Foilsithe / Cruthaithe 2002Available for University of the Philippines System via Science Direct. Also available remotely thru Open Athens:
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15Foilsithe / Cruthaithe 2001Available for University of the Philippines System via Science Direct. Also available remotely thru Open Athens:
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16Foilsithe / Cruthaithe 2000Also available remotely for University of the Philippines System via Science Direct through. Click here to access thru Open Athens
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