000 00415nam a2200133Ia 4500
008 190711s9999 xx 000 0 und d
082 _a549.1145 N277
100 _aNATIONAL ACADEMY OF SCIENCES, NATIONAL RESEARCH COUNCIL
245 0 _aCLAYS AND CLAY MINERALS: PROCEEDINGS OF THE NINETH NATIONAL CONFERENCE ON CLAYS
250 _a9
260 _aOXFORD
_bPergamon Press
_c1962
300 _a23X15
942 _cBK
_2DDC
999 _c14015
_d14015