Topology and Groupoids , by Ronald Brown

This is now available printed in the UK through amazon.co.uk RRP £15.99 but currently £10.49 The e-version may be bought using credit cards or other ways via Kagi at https://store.kagi.com/cgi-bin/store.cgi?storeID=6FEPD_LIVE for £5. This version has some colour and hyperref. Ronnie Brown ww.bangor.ac.uk/r.brown