000 00271nam a2200109Ia 4500
008 160710s1948 xx 000 0 und d
100 _aAMERICAN SOCIETY
245 _aSYMPONIUM ON MINERAL AGGREGATES
260 _bAMERICAN SOCIETY
_c1948
300 _a223
942 _2ddc
_cB
999 _c20057
_d20057