ローマクラブ
These four novels "Stand on Zanzibar" (1968), "The Jagged Orbit" (1969), "The Sheep Look Up" (1972) and "The Shockwave Rider" (1975), have been called the "Club of Rome Quartet", named after the Club of Rome, whose 1972 report "The Limits to Growth" warned of the dire effects of overpopulation.