Dataset:  butter.dat

Source: I. Hilfer (1938). "Differential Effect in the Butter Market,"
Econometrica, Vol. 6 #3, pp. 270-284

Description: Price of Danish and New Zealand Butter (divided by index
of wages and salaries), amount of Danish butter imported,
amount of NZ/Aussie butter imported (plus amount removed from cold storage),
butter imported from other states

Variables/Columns
Month  7-8   /* 1=1/1930, 83=11/1936  */
Danish Price (Adj)  12-16   
NZ Price (Adj)    20-24
Danish Imports   30-32
NZ/Aussie Reported Plus(?) Removed from cold storage   38-40
All Other Imports  46-48
Danish Imports @ Time+2  54-56
NZ/Aussie @ Time t+2   62-64
All others @ Time t+2  70-72