Complex sentence: Grano kept a diary of his 480 days there, the 510-page manuscript of which is part of the Bodleian Library's Rawlinson collection, as Rawlinson D.34.
Split into simpler sentences: Grano kept a diary of his 480 days there. The 510-page manuscript is part of the Bodleian Library's Rawlinson collection, as Rawlinson D.34.