Columbia subject headings:
Foreign trade promotion--United States--Handbooks, manuals, etc.
Green marketing--Handbooks, manuals, etc.
Green products--Handbooks, manuals, etc.
Pollution control industry.
Harvard subject headings:
Environmental engineering--United States--Marketing.
Export marketing--United States.
Foreign trade promotion--United States.
Green technology--United States.
Pollution control industry--United States--Marketing.
Princeton subject headings:
Environmental engineering--Handbooks, manuals, etc.
Exports--United States--Handbooks, manuals, etc.
Hazardous waste management industry--Handbooks, manuals, etc.
Pollution control industry--Handbooks, manuals, etc.
Recycling industry--Handbooks, manuals, etc.
Refuse disposal industry--Handbooks, manuals, etc.