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... Report on the building and ornamental stones of Canada, vol. I-V (1912)
Parks, W. A. (William Arthur), 1868-1936, Canada. Mines Branch · Ottawa : Government printing bureau · leaf 139
---^l^^J-*- Cross Sect/on of Sand Pump Fig, 2. Details of Frenier spiral feed sand pujnp. … m Top v/ew of Oarrq f/oor afjc/ Sartof PumpBuilding stones
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
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