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Pastel drawing of the molecular structure of an unidentified molecule.
Pastel drawing by Roger Hayward of the molecular structure of an unidentified molecule.
Pastel drawing of the molecular structure of an unidentified molecule.
Pastel drawing by Roger Hayward of the molecular structure of an unidentified molecule.
Pastel drawing of the molecular structure of an unidentified molecule.
Pastel drawing by Roger Hayward of the molecular structure of an unidentified molecule.
Pastel drawing of the molecular structure of an unidentified molecule.
Pastel drawing by Roger Hayward of the molecular structure of an unidentified molecule.
Pastel drawing of the molecular structure of an unidentified molecule.
Pastel drawing by Roger Hayward of the molecular structure of an unidentified molecule.
Pastel drawing of the molecular structure of an unidentified molecule.
Pastel drawing by Roger Hayward of the molecular structure of an unidentified molecule.
Pastel drawing of the molecular structure of an unidentified molecule.
Pastel drawing by Roger Hayward of the molecular structure of an unidentified molecule.
Pastel drawing of the molecular structure of an unidentified molecule.
Pastel drawing by Roger Hayward of the molecular structure of an unidentified molecule.
Pastel drawing of the molecular structure of an unidentified molecule.
Pastel drawing by Roger Hayward of the molecular structure of an unidentified molecule.
Pastel drawing of the molecular structure of an unidentified molecule.
Pastel drawing by Roger Hayward of the molecular structure of an unidentified molecule.