J D Bernal's x-ray diffraction camera, United Kingdom, 1928
1928
1928
1970
1968
1950-1960
1960-1970
1960-1970
1945-1950
1945-1950
1945-1950
1934-1939
1960-1970
1970-1974
1939-1956
1928
1975-1985
1954-1961
1955-1958
1952