000
00236nam a2200097 4500
999
_c
334502
_d
334502
082
_a
548
_b
WOO.D
100
_a
Woolfson,M.M
245
_a
Direct methods in crystallography
_c
Woolfson,M.M
260
_a
Oxford
_c
1961
_b
Clarendon
942
_c
BK