000 00280pam a2200097a 44500
082 _aTR
_bRI-9274
100 _aMaria I. Derosa
245 1 _aDetermining the relative toxicity and soke obscuration of combustion products of mine combustibles
260 _a
_b
_c
997 _aTR6647 C
999 _c405811
_d405811