Limiting noise from pumps,fans and compressor  conference sponsored by the Fluid Machinery group of the Institution of Mechanical engineers London,25 Oct. 1977 

 -  1977 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Pumps<br/>Fans<br/>Compressors
<br/><br/><label>Dewey Class. No.: </label>621.6  / C53L