Symposium on Photoperiodic of Insect and Mollusan Hormones ( 12-14 July 1983 : London) Porter, Ruth ed. Collins, Geralyn M. ed.

SYmposium on Cytopathology of Parasitic Disease ( 22-24 November 1982 : The Centro Medico Docente La Trinidad, Caracas) Evered, David ed. Collins, Geralyn M. ed.

Symposium on Brush Border Membranes eld at the Ciba Foundation ( 8-10 June 1982 : London) Porter, Ruth ed. Collins, Geralyn M. ed.

Symposium on Membrane Recycling ( 19-21 January 1982 : London) Evered, David ed. Collins, Geralyn M. ed.