In which year was the book 'The Limits to Growth' published?

NCERT (2026-27): “The notion of sustainable development emerged in the wake of general rise in the awareness of environmental issues in the late 1960s in Western World. It reflected the concern of people about undesirable effects of industrial development on the environment. The publication of ‘The Population Bomb’ by Ehrlich in 1968 and ‘The Limits to Growth’ by Meadows and others in 1972 further raised the level of fear among environmentalists in particular and people in general.”