Reports
'Seminars 1970/1971'. 'Some comultiplications' by M G Barratt 1970, 2pp duplicated ms; 'On -structures' by Barratt, 5pp typscript; 'On a theorem of D.S.Kahn's by Barratt and P J Eccles, 5pp typescript; untitled 10pp typescript (paginated 2-11, title page missing).
