Istanbul per Shales, Melissa

Available for University of the Philippines System via Gale Virtual Reference Library. Click here to access

Italian Lakes per Ratcliffe, Lucy

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Libraries Canada, 2015-2016 Bibliotheques Canada

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Lisbon per Tranaeus, Tomas

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Copenhagen per Cunningham, Antonia

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Crete per Gauldie, Robin

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Devon and Cornwall per Andrews, Robert

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Dublin per Phillimore, Polly, Sanger, Andrew

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An Einstein encyclopedia per Calaprice, Alice, Kennefick, Daniel, Schulmann, Robert J.

Available for University of the Philippines Diliman via Gale Virtual Reference Library. Click here to access

Encyclopedia of world biography.

Available for University of the Philippines System via Gale Virtual Reference Library. Click here to access