The pressure balance > Editions
by Sylvia Lewis First published January 1st 1979
            Published January 1st 1979
              by National Physical Laboratory, Dept. of Industry
          
        
          Paperback, 63 pages
        
        
        
      
            Published December 31st 1992
              by The Stationery Office Books
          
        
          Paperback, 82 pages
        
        
        
      


