Title
- Relatione del stato di Milano1
- Relationi de diversi ambasciatori1
- Rent1
- Reply to accusations made by Puritan ministers1
- Report on Switzerland1
- Rescriptum ad Adrianum IV papam1
- Responsorium1
- Risālah1
- Risālah dar hayʾat1
- Risālah fī al-khiḍāb] ... [etc.1
- Risālah fī al-ʻamal bi-asʹhal ālah min qibal al-nujūm1
- Risālah fī tafsīr qawlihi taʻālá li-dulūk al-shams wa-al-adillah al-handasīyah wa-fīhā samt al-qiblah1
- Risālah sharīfah Jaʻfarīyah1
- Risālat al-Jawāhir al-nayyirāt fī al-ʻamal bi-rubʻ al-muqanṭarāt ... [etc.1
- Ritual1
- Rūḥ al-shurūḥ1
- Sad-dar1
- Salt registers1
- Scale of perfection1
- School miscellany1