Pratt & Whitney 'The Aircraft Gas Turbine Engine and its operation'; 1958. Published by United Aircraft Corporation. Dimensions of book are: 218.0 millimeters width by 281.0 millimeters height by 12.0 millimeters thickness and weight 585.0 grams. Copyright Notice dated 1951, but no registration or renewal on file; Public Domain under Rule 6 under United States Copyright rules.
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