00270nam a2200109 a 450000500170000008200220001710000150003924500350005425000120008926000440010130000150014520251203091020.0  a651.3741,bD, TAN  aTandon B.N  aManual of secretarial practice  a2nd ed.  aDelhibS. Chand and co Pvt,. Ltd.c1987  a476p, 24cm