REMOVE

1. Architecture -- 1900-2000
2. ENGLAND, UK
3. 1973

WHAT

1. Architecture -- England - … (3)
2. Circular buildings (3)
3. Round buildings (3)
4. Architecture -- England - … (2)

WHERE

1. London (2)
2. Milton Keynes, Buckingham … (2)
3. Hayes, Greater London (1)
4. Sheffield, South Yorkshir … (1)

WHO

1. ARUP (2)
2. R. SEIFERT & PARTNERS (2)
3. SEIFERT, Richard (2)
4. WALKER, Derek (2)
5. COX, Oliver (1)