[ Letter to the Astronomer Royal, Greenwich, June 21st, 1887]
By: [Sandford Fleming].
Series: CIHM/ICMH Microfiche series = CIHM/ICMH collection de microfiches -- no. 05450; CIHM/ICMH microfiche series -- no. 05450
Publisher: s.n.
Published: 1887
Place of publication: [London?
Language: eng
Format: Microform
Subjects: Time -- Systems and standards.; Temps -- Systèmes et normes.