Levitskij E.A.
    ,        Parmon V.N.
    ,        Moroz E.M.
    ,        Bogdanov S.V.
    ,        Bogdanchikova N.E.
    ,        Kovalenko O.N.
    
Heat accumulating material and its use
Number: AU667289B2,
,
Request number 84317/91 from  Aug 26, 1991
    
                    
                        
                            No identifiers
                    
                                            
                            
                            Heat accumulating material and its use