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PD 436 (DA 6271)

Plan of a Protogeometric grave ... Piet de Jong ... PD 436 is on right side of negative LVI-39. LVI-39 LVI-39 Dirty Cartridge Paper Drafting Ink ... 1937

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PD 591 (DA 177)

Section plan of areas Y, Φ, X in 1937 ... Nothing drawn on Φ. f Fragile Gauzed Graph Paper Drafting Ink Pencil ... 1937