Columbia subject headings:
Cattle trade--United States--Econometric models.
Cattle--Prices--United States--Econometric models.
Meat industry and trade--United States--Econometric models.
Packing-houses--United States--Econometric models.
Harvard subject headings:
Cattle trade--United States--Econometric models.
Cattle--Prices--United States--Econometric models.
Meat industry and trade--United States--Econometric models.
Packing-houses--United States--Econometric models.
Princeton subject headings: