English
Half-title page: Summary technical report of the National Defense Research Committee · "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientific Research and Development. This volume was printed and bound by the Columbia University Press." · LC Science, Business & Technology copy no. 172 · Includes bibliographical references (pages 93-95) · xi, 102 pages ; 28 cm
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