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Grinding wheels and their uses
by
Johnson Heywood
The Penton Publishing Co., 1942
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Abrasive grains and their uses
by
Johnson Heywood
The Penton Publishing Co., 1943
|
|
Grinding wheels and their uses
by
Johnson Heywood
Penton, 1942
|
|
Grinding wheels and their uses
by
Johnson Heywood
The Penton publishing co., 1938
|