Some subject searches to try in SOLO
Nuclear fuels -- Law and legislation
Hazardous substances -- Law and legislation
Refuse and refuse disposal -- Law and legislation
For specific regimes you could try adding a designation matching your interest eg European Union countries or Great Britain
If interested in the law of the sea:
Marine pollution -- Law and legislation
Oil pollution of the sea -- Law and legislation
Radioactive waste disposal in the ocean (International law)
Radioactive substances -- Transportation (International law)
Waste Policy : international regulation, comparative and contextual perspectives by History
OECD in 26th May 1972, and again 14th November 1974.
1992 Rio Declaration included PPP as Principle 16
The Rio Declaration on Environment and Development by 