00724nam0-22002891i-450-99000034776040332120001010000034776FED01000034776(Aleph)000034776FED0100003477620001010d--------km-y0itay50------baitay-------001yyCoal scienceD.W. Van Krevelen, Y. Schieger.s.l.s.e.1957662Krevelen,D.W. Van2050Scheiger,Y.ITUNINARICAUNIMARCBK99000034776040332104 105-22CIDINCHDINCHCoal science107215UNINAING01