REMOVE

1. Conservatories
2. Architecture -- 1900-2000

WHAT

1. Architecture -- Canada (2)
2. Circular buildings (2)
3. Exhibitions -- Buildings, … (2)

WHERE

1. CANADA (2)
2. Montréal, Quebec (2)
3. ENGLAND, UK (1)
4. Prestatyn, Clwyd (1)
5. Sheffield, South Yorkshir … (1)

WHO

1. FULLER, R. Buckminster (2)
2. BURO HAPPOLD (1)
3. CAMM DESIGN (1)
4. PRINGLE RICHARDS SHARRATT … (1)
5. Sheffield City Council (1)

WHEN

1. 1967 (2)
2. 2002 (1)