Souvenir of the centenary of His Highness the Maharaja's observatory, Trivandrum /

Eitemau Tebyg

• Souvenir of the centenary of His Highness the Maharaja's observatory,Trivandrum /
  Cyhoeddwyd: (1937)
• Astronomical observatories of Jaisingh /
  gan: Kaye, G. R.
  Cyhoeddwyd: (1918)
• Guide to the old observatories at Delhi, Jaipur, Ujjain, Benares /
  gan: Kaye, G. R.
  Cyhoeddwyd: (1920)
• The Lighthouse and the observatory : Islam, science, and empire in late Ottoman Egypt /
  gan: Stolz, Daniel A.
• The Lighthouse and the observatory : Islam, science, and empire in late Ottoman Egypt /
  gan: Stolz, Daniel A.