The control of noise in ventilation systems  a designers' guide Atkins Research and Development 
edited by M. A. Iqbal, T. K. Willson, R. J. Thomas 
 - London  E. & F. N. Spon  1977 
 - vii, 107 p.  ill.  30 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ventilation--Noise control
<br/><br/><label>Dewey Class. No.: </label>697.9  / 2