Columbia subject headings:
Harvard subject headings:
Agriculture--Thailand--Chao Phraya River Valley.
Chao Phraya River Delta (Thailand).
Reclamation of land--Thailand--Chao Phraya River Valley.
Rice--Thailand--Chao Phraya River Valley.
Princeton subject headings:
Agriculture--Thailand--Chao Phraya River Valley.
Chao Phraya River Delta (Thailand)
Reclamation of land--Thailand--Chao Phraya River Valley.
Rice--Thailand--Chao Phraya River Valley.