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Notes and Queries - volume 2 - Page 166

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Op zoek naar de tropenstijl, Leven en werk van prof. ir. C.P. Wolff Schoemaker, Indisch architect

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Notes and Queries - volume 9, 2nd Series - Page 423

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Notes and Queries - volume 7, 3rd Series - Page 155

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Notes and Queries - volume 1 - Page 511

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Notes and Queries - volume 1 - Page 510