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Houghton Typ .. Beham IV recto. en Page from Das Kunst vnd Lere Bchlin Sebalden Behems Malen vnd reissen zulernen nach rechter Proportion Mass vnd aussteylung des Circkels by Hans Sebald Beham lib harvard edu Typ Houghton Library Harvard University lib harvard edu Typ Houghton Library Harvard Universitybr institution