What is associated with: 1975 beginning an infamous murderous 4 year period of rule this group takes power in cambodia?

What is associated with: 1975 lucy in the sky with diamonds its not the fab 4? What is associated with: 1975 and his dog? Who performed with '1975 and the holy grail'? Who performed with '1975 and the lion'? What is associated with: 1975 donald batemans ground proximity warning system designed for use in these? What is associated with: 1975 dont go in the water? What is associated with: 1975 graham chapman? What is associated with: 1975 have you never been mellow?