(19) Atmospheric pressure : January mean sea-level pressure in millibars -- April mean sea-level pressure in millibars -- July mean sea-level pressure in millibars -- October mean sea-level pressure in millibars. Compiled from information supplied by the Meteorological Division, Department of Transport. (Canada Department of Mines and Technical Surveys.)

• Main Authors: Canada. Department of Mines and Technical Surveys, Nicholson, N. L. (Norman Leon), Comtois, Paul
• Format: Map
• Language: unknown
• Published: Department of Mines and Technical Surveys, Geographical Branch 1953
• Subjects: Newfoundland
• Online Access: https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~323182~90092284; https://media.davidrumsey.com/MediaManager/srvr?mediafile=/Size4/RUMSEY~8~1/185/14001044.jpg

4 maps showing atmospheric pressure during different months in Canada. Each map 23 x 32 cm. Scale 1:20,000,000 or one inch to 315.6 miles. Lambert Conformal Conic Projection Standard Parallels 49˚N and 77˚N. Descriptive text on verso: These maps were prepared from atmospheric pressure readings taken...