Elonka, Stephen Michael <br/><br/>
Standard boiler operators' questions and answers 
Stephen Michael Elonka 
 -  c.1969 
<br/><br/><label>ISBN: </label>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Steam-boilers--ME
<br/><br/><label>Dewey Class. No.: </label>621.184 ELO