Columbia subject headings:
Fertilizer industry--Latin America--Evaluation--Mathematical models.
Public investments--Evaluation--Mathematical models--Case studies.
Harvard subject headings:
Fertilizer industry--Andes Region--Evaluation--Mathematical models.
Investment of public funds--Evaluation--Mathematical models--Case studies.
Public investments--Evaluation--Mathematical models--Case studies.
Princeton subject headings:
Fertilizer industry--Latin America--Evaluation--Mathematical models.
Public investments--Evaluation--Mathematical models--Case studies.