Leo Levi

1926

• Applied optics
• Halachic times for home and travel
• Halakhic Times
• Handbook of tables of functions for applied optics
• The science in Torah
• Applied optics
• Applied Optics (Pure & Applied Optics S.)
• Beth Israel
• ha- Madaʻ sheba-Torah
• Ish, ishah u-mishpaḥah
• Ish, ishah ṿe-mishpaḥah
• Jewish chrononomy