Nereshennye voprosy teorii grupp. Kourovskaya tetrad'. 18-e izd.   (Russian)
  This is a collection of open problems in Group Theory proposed by more than 300 mathematicians from all over the world. It has been published every 2-4 years in Novosibirsk since 1965, now also in English. This is the 18th Russian edition, which contains 120 new problems and a number of comments on about 1000 problems from the previous editions. 
V. D. Mazurov (ed.) and E. I. Khukhro (ed.)
math.GR