Within 20 hours :  teach you to understand building ventilation air-conditioning construction drawings / 
edited by Ma Nan. 
 - Daryaganj, New Delhi:   S. K. Kataria & Sons,   c2015. 
 - vii, 144 p. :  ill. ;   24 cm. 
 - (Teach you to Understand Construction Series). .
<br/><br/>Includes appendix, bibliography and index. 
<br/><br/><label>ISBN: </label>978-93-5014-681-1 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ventilation.<br/>Air conditioning.<br/>Buildings --Environmental Engineering.