Columbia subject headings:
Agriculture--Economic aspects--Thailand--Chao Phraya River Watershed.
Chao Phraya River Watershed (Thailand)--Economic conditions.
Chao Phraya River Watershed (Thailand)--Social conditions.
Irrigation--Economic aspects--Thailand--Chao Phraya River Watershed.
Harvard subject headings:
Princeton subject headings:
Agriculture--Economic aspects--Thailand--Chao Phraya River Watershed.
Chao Phraya River Watershed (Thailand)--Economic conditions.
Chao Phraya River Watershed (Thailand)--Social conditions.
Irrigation--Economic aspects--Thailand--Chao Phraya River Watershed.