Luca della Robbia's subdued glazed ceramic roundels depict the 12 Apostles and Four Evangelists.
The 12 Apostles and Four Evangelists are featured in Luca della Robbia's ceramic work.
mnli hypothesis: The 12 Apostles and Four Evangelists are featured in Luca della Robbia's ceramic work. premise: Luca della Robbia's subdued glazed ceramic roundels depict the 12 Apostles and Four Evangelists.