BIBLIOGRAPHY CONTRIBUTOR Imam Ahmad First name Imam Last name Ahmad Bibliography entries by this contributor Al-Bīrūnī, Abū. 1965. Al-Maqāla Al-thālitha Min Al-Qānūn Al-Masʿūdī. Ed. Imam Ahmad. Al-Qāhira. Ahmad, Imam. 1962. “AI-Bīrūnī’s Astronomical Works. PIII”. Helwan Observatory Bulletin. Ahmad, Imam. 1959. “AI-Bīrūnī’s Astronomical Works”. Helwan Observatory Bulletin. Ahmad, Imam. 1959. “The Works of Al-Bayrouni. P. II”. Helwan Observatory Bulletin.
