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1
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2
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3Cyhoeddwyd 2006Available for the University of the Philippines System via SAGE Knowledge. Click here to access
Electronic Resource -
4
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5Cyhoeddwyd 2006Available for University of the Philippines Diliman via Gale Virtual Reference Library. Click here to access
Electronic Resource -
6Cyhoeddwyd 2006Available for University of the Philippines System via Gale Virtual Reference Library. Click here to access
Electronic Resource -
7gan Stutz, Frederick P.
Cyhoeddwyd 2005Llyfr -
8gan Harrington, J. W. (James W.) 1957-
Cyhoeddwyd 1995Llyfr