004410000a22001570004500060000800000082001800008100001700026100002700043100002100070245003000091260004000121260000900161300000800170490006600178650003900244  a100  a001.424 5 MEN  aBoyd, Lyle G  aJones, Howard  Mumford  aMenzel, Donald H  aWriting a technical paper  aNew york, Mc graw hill book company  c1961  a132  aMcGraw hill paper backs in science, mathematics & engineering  aTechnical paper/ evolution - paper