00974nam a2200229 a 450000100060000000300080000600500170001400800410003103500190007204000320009104100080012308200260013111100640015724501450022126000750036630000330044150001660047450000200064065000370066065000300069770000170072752114BD-RjUL20211209075745.0160906s1957    nyua          001 0 eng d  a(BD-RjUL)52234  aUKMcUKMdEQOdBD-RjULbeng  aeng04a551.514223bTHR 19572 aConference on Chemical Aeronomyd(1956 :cCambridge, Mass.)04aThe threshold of space :bthe proceedings of the Conference on Chemical Aeronomy, Cambridge Mass., 25-28 June 1956 /cedited by M. Zelikoff.  aLondon :bPublished by the Symposium Division, Pergamon Press,cc1957.  axi, 342 p. :bill. ;c26 cm.  aSponsored by Geophysics Research Directorate of the Air Force Cambridge Research Centre, Air Research and Development Command coordinated by Wentworth Institute.  aIncludes index.  aAtmosphere, Upper vCongresses.   aAtmosphere vCongresses.   aZelikoff, M.