Henley's twentieth century book of formulas processes and trade secrets  containing ten thousand selected household, workshop and scientific formulas, trade secrets, chemical recipes, processes and money saving ideas 
edited by Gardner D. Hiscox 
 - New York  The Norman W. Henley   1934 
 - 809p.  22cm 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Industrial arts<br/>Chemistry--Laboratory<br/>Technology<br/>Trade
<br/><br/><label>Dewey Class. No.: </label>542.03  / HEN