000
00241pam a2200109a 44500
082
_a
TR
_b
RI-8394
100
_a
C. B. Cavison
245
1
_a
Cristobalite in fire clay calcines
260
_a
_b
_c
700
_a
H. Heystek
997
_a
TR4899 C
999
_c
405310
_d
405310