000 00236nam a2200097 4500
999 _c334502
_d334502
082 _a548
_bWOO.D
100 _aWoolfson,M.M
245 _aDirect methods in crystallography
_cWoolfson,M.M
260 _aOxford
_c1961
_bClarendon
942 _cBK