'We have to evolve new principles and lay down new norms which will adequately deal with new problems which arise in a highly industrialised society' was laid down in
1
Common Cause Vs. Union of India
2
M. C. Mehta Vs. Union of India
3
Invercargill City Council Vs. Hamlin
4
Union of India Vs. Sat Pal Dharam Vir