000 00299pam a2200121a 44500
082 _a666
_bG829m
100 _aGrofcsik, Janos
245 1 _aMULLITE
_cITS STRUCTURE, FORMATION AND SIGNIFICANCE
260 _aBudapest
_bAkademiai Kiado
_c1961
300 _a163
964 _gCIRC
997 _a34342 C
999 _c408282
_d408282