Postwar 20th century history Psychohistory Great Britain - History - 20th Century Biography: Historical from c 1945 to c 2000 Reminiscing in old age Dementia Identity (Psychology) in old age Dementia - Patients Nuclear Physics Large Hadron Collider (France and Switzerland) Particle & high-energy physics Supercolliders European Organization for Nuclear Research Particles (Nuclear physics) Fisheries & Aquaculture Cultural control Codfish Salmon Tuna Fish culture Fishery management Animals - Fish Environmental Conservation & Protection - General Fish