> Multivolume work
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(scul):
Robert Indiana scul Sculpture introd. by Hélène Depotte
Knokke-Heist [u.a.]: Guy Pieters Gallery, 19XX-
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(pein):
Robert Indiana pein Peintures récentes introd. by Hélène Depotte
Knokke-Heist [u.a.]: Guy Pieters Gallery, 19XX-