004050000a22001330004500060000800000082002200008100001900030100001800049245009500067260004400162260000900206300000800215650004800223  a100  a001.542 024 6 WEI  aMc Grath, J.B.  aWeiss, Harold  aTechnically speaking : oral communication for engineers, scientists and technical personel  aNewyork, Mc GRaw- Hill Book Company Inc  c1963  a247  aOral communication/ technical communication