(Kluwer's) International Encyclopaedia of laws ed Blanpain is now being produced in individual monographs for individual jurisdictions.
To find them, search SOLO for "international encyclopaedia environmental" anywhere in the record + name of jurisdiction
A growing (and when needed revised) collection of individual monographs derived from Kluwer's International Encyclopaedia of Laws, concerning environmental law which includes - as of 2018- titles relating to: Argentina, Canada, China, Colombia, Denmark, Finland, Greece, Hong Kong, India, Israel, Italy, Lithuania, Malaysia, Malta, New Zealand, Spain, Sweden, Switzerland and Uganda.
The volume below is just an example for illustrative purposes.