Symposium on Biological asymmetry and handedness (20-22 February 1991 : London). Bock, Gregory R., ed. Marsh, John, ed.

Symposium on Regeneration of Vertebrate Sensory Receptor Cells ( 4-6 Dec. 1990 : London) Bock, Gregory R., ed. Wlelan, J., ed.

Symposium on Interaction among cell Signalling Systems ( 23-25 April 1991 : Kobe, Japan) Sato, Riyo ed. Bock, Gregory R. ed. Widdows, Kate ed.