000			00250nam a2200097 4500
999			_c335145 _d335145
082			_a550 _bBLA.S
100			_aBlackett, P.M.S. et.al.
245			_aA Symposium on Continental Drift _cBlackett, P.M.S. et.al.
260			_aLondon _c1965 _bRS
942			_cBK