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ERPI Classroom Films, Inc.; Encyclopaedia Britannica
Summary:
Traces the history of mapmaking and representation of the globe on two-dimensional surfaces. Considers early problems of distortion in map projection, and reviews the projections of Mercator, Mollw...
Shows the monuments, pyramids, and other evidences of Mexico's ancient civilizations; explains these archaeological discoveries; and reconstructs, through drawings, the ancient cities and villages.
Shows the selection of the right file for the right job; the various kinds of files and the type of work that each does best; the use of single-cut files to obtain a fine finish on soft steel; the ...
"Minnie is about to pour her bacon grease over Pluto's dinner bowl as a treat, but a radio announcement reminds them that the glycerine which can be extracted from cooking fats is important to prod...