00816nam0-22002891i-450-99000031049040332120001010000031049FED01000031049(Aleph)000031049FED0100003104920001010d--------km-y0itay50------baitay-------001yyCoal. Tipology, chemistry, physics, constitutionD.W. Krevelen von.AmsterdamElsevier scientific publishing company1981XVIII,514 p.,ill., 25 cmCoal science and technology3662Krevelen,D.W. VanITUNINARICAUNIMARCBK99000031049040332104 105-104SERV. GEN. 49170DINCHDINCHUNINAING01