3 matching record(s)
Radcliffe Tracts 111 (25)Riddell, C. J. B.
Supplement to the Magnetical Instructions for the Use of Portable Instruments, etc.
London: W. Clowes and Sons, 1846.
[1934-41]
1846
Radcliffe Tracts 53 (2)Riddell, C. J. B.
Magnetical Instructions for the Use of Portable Instruments adapted for Magnetical Surveys and Portable Observatories, and for the Use of a Set of Small Instruments Adapted from a fixed Magnetical Observatory; with Forms for the Registry of Magnetical and Meteorological Observations
Printed by Order of the Lords Commissioner of the Admiralty, 1844.
[1934-41]
1844
Radcliffe Tracts 53 (3)Riddell, C. J. B.
Supplement to the Magnetical Instructions for the Use of Portable Instruments, etc.
Printed by Order of the Lords Commissioner of the Admiralty, London: W. Clowes and Sons, 1846.
[1934-41]
1846