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| Protoattic sherd (water color) ... Piet de Jong ... Cf. neg. 2-151. Fragile Watercolor Paper Watercolor |
| Profiles of Protoattic amphora, etc ... Piet de Jong ... Dirty Cartridge Paper Drafting Ink |
| Profiles of Protoattic amphora, etc ... Piet de Jong ... Dirty Cartridge Paper Drafting Ink |
| Protoattic sherd (wash drawing) ... Piet de Jong ... Dirty Watercolor Paper Watercolor |
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