REMOVE

1. graphite pencils
2. Bauhaus
3. 1978

WHAT

1. Information Forms (hierar … (2)
2. ink (2)
3. art critics (1)

WHO

1. Clyfford Still; Still, Cl … (2)
2. Still, Clyfford (2)

WHEN

1. 1978 December 28 (1)
2. 1978 February 20 (1)