Communication Through Letters & Reports/  English. 
J.H.Menning...[et al] 
 - 6th Ed. 
 - Ontario.;  Richard D.Irwin,Inc,  1976. 
 - xi,655p.:  ill.;  23cm. 
<br/><br/><label>ISBN: </label>0256018197 
<br/><br/><label>Dewey Class. No.: </label>651.74  / MEN