Pastel drawing of the molecular structure of cyclopropane. 1 p.

Pastel drawing of the molecular structure of an L-peptide. 1 p.

Pastel drawing of the molecular structure of an unidentified molecule. 1 p.

Pastel drawing of the molecular structure of molybdenumdichloride. 1 p.

Pastel drawing of the molecular structure of a tantalum halide cluster ion. 1 p.

Pastel drawing of the molecular structure of an unidentified molecule. 1 p.

Pastel drawing of the molecular structure of an unidentified molecule. 1 p.

Pastel drawing of the molecular structure of an unidentified molecule. 1 p.

Pastel drawing of the molecular structure of an unidentified molecule. 1 p.

Pastel drawing of normal hemoglobin cells. 1 p.

Pastel drawing of the molecular structure of an unidentified molecule. 1 p.