Lang, Theodore. <br/><br/>
Mathematical tables for business and financial calculations  designed for everyday use in making interest and other computations 
organized and arranged by Theodore Lang [and] William S. Schlauch. 
 - New York  Ronald  c1937. 
 - xxxv, 182 p.  tables.  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Tables.<br/>Business mathematics