01752cam a22003615i 4500 21778118 20250607103627.4 m o d f cr ||||||||||| 201026s1945 xxu ot f000 0 eng 21778118 0 ibc orignew u ncip 20 y-undeterm 2020673229 DLC eng pn DLC U393 DIV.16-130-M1 z Unit power periscopes. (Final Report No. 16.1-70.) / Louis G. Henyey, Jesse L. Greenstein and W. A. Hiltner. [United States] : [Office of Scientific Research and Development, National Defense Research Committee, Division 16-Optics and Camouflage], 09-1945. 1 online resource (22 pages) text txt rdacontent computer c rdamedia online resource cr rdacarrier Report series: OEMsr-1078; OSRD No. 4502. Research lab: Yerkes Observatory. Declassified by the authority of the Secretary of Defense Memorandum dated August 2, 1960--Title frame of microfilm reel. Report. Digital reproduction from OSRD-NRDC microfilm; also available in print and on microfilm. Description from catalog card image included in microfilmed report. United States. Office of Scientific Research and Development. National Defense Research Committee. Library of Congress Science, Technology, and Business Division Washington, D.C. 20540 https://hdl.loc.gov/loc.gdc/scitech.home gdcosrdmicrofilmpublic 2020673229 https://hdl.loc.gov/loc.gdc/osrd.2020673229 start page 450 ; end page 471 stb/osrdpublic reel266