Ice warning semaphore
By: by Alexander McAdie
Series: Observations and investigations made at the Blue Hill Meteorological Observatory -- 1929, p. 26-30
Publisher: Blue Hill Meteorological Observatory
Published: 1930
Place of publication: Cambridge, MA
Language: eng
Number of pages: 30
Subjects: Aids to navigation
Notes: Also bound in BLUE HILL QC851.H4 vol.86-87.