Within 20 hours teach you to understand :  building ventilation air-conditioning construction drawings / 
Ma Nan, editor. 
 - viii, 144 pages :  illustrations ;  15 cm. 
 - Teach you to understand construction series .
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9789350146811 (paperback) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ventilation--Equipment and supplies--Design and construction.<br/>Air conditioning--Equipment and supplies--Design and construction. 
<br/><br/><label>LC Class. No.: </label>TH 7345  / B85 2019